Aquaponics Digest - Wed 03/07/01
Message 1: Re: Hyacinth Leaf burn
from "STEVE SPRING"
Message 2: Re: Hyacinth Leaf burn
from dreadlox 'at' cwjamaica.com
Message 3: apology
from "STEVE SPRING"
Message 4: Re: apology
from dreadlox 'at' cwjamaica.com
Message 5: Re: apology
from "STEVE SPRING"
Message 6: Re: Hyacinth Leaf burn
from "STEVE SPRING"
Message 7: Re channels vs bed
from "Tony Cooper"
Message 8: Fungus Gnats
from
Message 9: Re: Freshwater Prawns
from "Adriana Gutierrez"
Message 10: Re: Technologies for Water Treatment
from "Michael Kline"
Message 11: Re: Technologies for Water Treatment
from "Adriana Gutierrez"
Message 12: Re: Hyacinth Leaf burn
from "Adriana Gutierrez"
Message 13: Re: apology
from "Adriana Gutierrez"
Message 14: pheromone bug traps
from laberge 'at' cil.qc.ca (LABERGE MARC)
Message 15: RE: Technologies for Water Treatment
from "Nick Kemp"
Message 16: Re: Technologies for Water Treatment
from CAVM 'at' aol.com
Message 17: Re: pheromone bug traps
from "Michael Kline"
Message 18: Re:Tanks- Braun Industries - Tue 03/06/01
from Jai Mani
Message 19: Re: Fish cancer/fungus
from "Adriana Gutierrez"
Message 20: Re: Technologies for Water Treatment
from Mark Hooper
Message 21: Re: Technologies for Water Treatment
from marc 'at' aculink.net
Message 22: Re: Technologies for Water Treatment
from dreadlox 'at' cwjamaica.com
Message 23: Re: Fungus Gnats
from dreadlox 'at' cwjamaica.com
Message 24: Re: Fungus Gnats
from laberge 'at' cil.qc.ca (LABERGE MARC)
Message 25: Up...
from laberge 'at' cil.qc.ca (LABERGE MARC)
Message 26: Re: Up...
from "Michael Kline"
Message 27: Re: Hyacinth Leaf burn
from cmccarth 'at' wvu.edu
Message 28: RE: Technologies for Water Treatment
from "Carlos R. Arano"
Message 29: RE: Technologies for Water Treatment -- Reply
from "Carlos R. Arano"
Message 30: Re: Re channels vs bed
from "Juan C. Bobeda"
Message 31: Re: Fungus Gnats
from "Juan C. Bobeda"
Message 32: RE: Tanks- Braun Industries - Tue 03/06/01
from Darren Pearce
Message 33: American Tilapia Association and Philippines pages
from S & S Aqua Farm
Message 34: Re: Technologies for Water Treatment
from "Juan C. Bobeda"
| Message 1
Subject: Re: Hyacinth Leaf burn
From: "STEVE SPRING"
Date: Wed, 7 Mar 2001 00:19:53 -0600
Hi Mike,
Your little black flies are probably "fungus gnats". Not to worry. They're
harmless, but a 14k pain in the a.. They get up your nose and multiply like
crazy. (Not necessarily multiply in your nose.....sorry, couldn't resist
that. :) ) I don't know of a cure for them. You can, however, reduce their
numbers by adding nematodes to your system and using the little yellow
"sticky" strips. I did find out, quite by accident, that they are
photolithic (sp) (light loving). I haven't tried this yet, but I want to. I
want to add a bug-zapper and see what it does. Just a thought.
By the way, once you have them, learn to love them because you won't get rid
of them. They breed like crazy.
Steve
----- Original Message -----
From:
To:
Sent: Tuesday, March 06, 2001 4:11 PM
Subject: Re: Hyacinth Leaf burn
Interesting point Bruce...
Now that U say it, Im not sure what leaf maggots are, but the leaves
have also simultaneously been taken over by a lot of black tiny fly
looking insects near to the bulb bases.
Can someone tell me more on these leaf maggots? The leaves did have some
black streaks in them when I took them from the natural river they where
in...can it be they were infested from then??
Regards,
Mike.
Bruce Schreiber wrote:
>
> Are you sure that your Hyacinths have leaf burn from the sun or do they
> have a leaf maggot infestation? If your Hyacinths came from a hot house
> in the north with artificial lights they will burn for a time when
> placed under hot sun light but soon regenerate new leafs as they do best
> in the tropics. But if you have a maggot infestation its caused by a
> small tan moth about 1/4 inch in size they must be treated with the
> (Bacillus thueriences spores) spelling? available at garden centers for
> grub and caterpillar damage to recover and this stuff works excellent.
> Bruce
--
"Faxes and emails are used by Barnetech Industrial Consultants as a
convenience for confidential, and often legally privileged, business
communications both within the firm and with clients. Disclosure to
parties other than addressees through for exampleforwarding, copying,
printing, distribution etc requires Barnetech Industrial Consultants
specific consent. Barnetech Industrial Consultants are not liable for
unauthorised disclosures nor for subsequent actions or omissions in
reliance upon them. If you have received this message in error please
notify us immediately and destroy all copies of it."
| Message 2
Subject: Re: Hyacinth Leaf burn
From: dreadlox 'at' cwjamaica.com
Date: Wed, 07 Mar 2001 01:55:04 -0800
Hi Steve,
I doubt that they are gnats. I know the gnats, and have sniffed a few
in my lifetime, so I know...:) these are tinier..
Uve hit a nail on the head or is it a hammer on my thumb...lets just say
your suggestion has hot home to me again the need to do
something...namely..last week I signed up with hotmail for their new
photo account thingee. It is my desire this year to start posting these
pics that I keep speaking about... and walking with my digicam.. and
asking more questions since a pic speaks a 1000 words...
Didnt we once say we were all gonna make a BIG photo site where we can
post pics...hmmm.
is that gone anywhere??? :)
Keeps smiling..
Mike...(JAMAICA)
STEVE SPRING wrote:
>
> Hi Mike,
>
> Your little black flies are probably "fungus gnats". Not to worry. They're
> harmless, but a 14k pain in the a.. They get up your nose and multiply like
> crazy. (Not necessarily multiply in your nose.....sorry, couldn't resist
> that. :) ) I don't know of a cure for them. You can, however, reduce their
> numbers by adding nematodes to your system and using the little yellow
> "sticky" strips. I did find out, quite by accident, that they are
> photolithic (sp) (light loving). I haven't tried this yet, but I want to. I
> want to add a bug-zapper and see what it does. Just a thought.
>
> By the way, once you have them, learn to love them because you won't get rid
> of them. They breed like crazy.
>
> Steve
>
> ----- Original Message -----
> From:
> To:
> Sent: Tuesday, March 06, 2001 4:11 PM
> Subject: Re: Hyacinth Leaf burn
>
> Interesting point Bruce...
>
> Now that U say it, Im not sure what leaf maggots are, but the leaves
> have also simultaneously been taken over by a lot of black tiny fly
> looking insects near to the bulb bases.
>
> Can someone tell me more on these leaf maggots? The leaves did have some
> black streaks in them when I took them from the natural river they where
> in...can it be they were infested from then??
>
> Regards,
> Mike.
>
> Bruce Schreiber wrote:
> >
> > Are you sure that your Hyacinths have leaf burn from the sun or do they
> > have a leaf maggot infestation? If your Hyacinths came from a hot house
> > in the north with artificial lights they will burn for a time when
> > placed under hot sun light but soon regenerate new leafs as they do best
> > in the tropics. But if you have a maggot infestation its caused by a
> > small tan moth about 1/4 inch in size they must be treated with the
> > (Bacillus thueriences spores) spelling? available at garden centers for
> > grub and caterpillar damage to recover and this stuff works excellent.
> > Bruce
>
--
"Faxes and emails are used by Barnetech Industrial Consultants as a
convenience for confidential, and often legally privileged, business
communications both within the firm and with clients. Disclosure to
parties other than addressees through for exampleforwarding, copying,
printing, distribution etc requires Barnetech Industrial Consultants
specific consent. Barnetech Industrial Consultants are not liable for
unauthorised disclosures nor for subsequent actions or omissions in
reliance upon them. If you have received this message in error please
notify us immediately and destroy all copies of it."
| Message 3
Subject: apology
From: "STEVE SPRING"
Date: Wed, 7 Mar 2001 00:56:03 -0600
Hi All,
I just want to make a "blanket" apology to this list, especially to Adrianna
G. I would have done this sooner, but I am just now coming off of one of my
marathon 7-day 12-hr noc shift runs. When I do these plus taking care of my
aquaponic system, it doesn't leave a lot of time. AND, I'm trying to refrain
from making any statements when I am "dog-dead" tired.
I apparently stepped on some toes and hurt some feelings of some really,
really nice friends regarding my previous comments concerning a (notice I
didn't say "THE") hydroponics list.
I was involved with "a" hydroponics list and asked some questions. I got
some really "rude & crude" responses such as (I'll never forget it.)
"....this just reeks of aquaponics. You have your own list, why bother us
with this?" I also received a response from someone who said she was the
list moderator. I don't remember her exact response. I do remember that it
wasn't very kind. BUT, the "kicker" was that she (to use the term) encrypted
her email address that I couldn't get it out of my system. Really screwed up
my computer. As I said earlier, I had to actually call my ISP to delete her
message.
This is absolutely the GREATEST list (in my opinion) on the internet. We
have all types of people, personalities, etc. I have gleaned some invaluable
information and resources from this list. I love the people and the
information that is available. I also like to feel that sometimes I am able
to contribute a little something.
I won't burden you anymore. Just thought this was necessary. I am a little
"socially insensitive" at times (GEEZ, I LOVE THAT TERM!!) Whoever called me
that, I just love it. I have more fun with that term....even the people at
work call me "socially insensitive" now. Just love it.
Take care all......Luv ya........Steve :)
| Message 4
Subject: Re: apology
From: dreadlox 'at' cwjamaica.com
Date: Wed, 07 Mar 2001 02:15:45 -0800
Ok Steve
dont worry we veterans on the group here are mighty forgiving tsk
tsk...weve dealt with this sort of thing before even kicked off a few
guys... nothing to worry about..just send a six-pack and a bunch of
roses for the wives to each listmember irrespective of place of origin.
These of course are to be sent DHL, and I like my beer cool at 8 deg
Celcius. Ohh.. there were some other suggestions last time we had this..
see not everyone drinks beer.. so please submit the standard order
sheet, well all be glad to fill it out. I know some on this list drink
"glugg" some "schnaps", and some aquaponic herbal teas,spirulina etc.
What does this all have to do with aquaponics?? Well it is said that
fish can tell the mental and emotional status of the hands that feed it
so we do wanna get back to forgiven status here and level the
vibes...soon... in case those fish start getting all fussy and skittish
again...
Well now that Ive forgiven U, I just wanted to let you know that the 3
year probation period still applies to you, even though you are a list
member..so any slip ups mate and WHOOoosh...
Hey..if you paid attention to my last mail.. re fungus gnats..
at the bottom..it says..
Keep smiling...
Hope you are.. or else..
Peace. :)
Mike.
JAMAICA
STEVE SPRING wrote:
>
> Hi All,
>
> I just want to make a "blanket" apology to this list, especially to Adrianna
> G. I would have done this sooner, but I am just now coming off of one of my
> marathon 7-day 12-hr noc shift runs. When I do these plus taking care of my
> aquaponic system, it doesn't leave a lot of time. AND, I'm trying to refrain
> from making any statements when I am "dog-dead" tired.
>
> I apparently stepped on some toes and hurt some feelings of some really,
> really nice friends regarding my previous comments concerning a (notice I
> didn't say "THE") hydroponics list.
>
> I was involved with "a" hydroponics list and asked some questions. I got
> some really "rude & crude" responses such as (I'll never forget it.)
> "....this just reeks of aquaponics. You have your own list, why bother us
> with this?" I also received a response from someone who said she was the
> list moderator. I don't remember her exact response. I do remember that it
> wasn't very kind. BUT, the "kicker" was that she (to use the term) encrypted
> her email address that I couldn't get it out of my system. Really screwed up
> my computer. As I said earlier, I had to actually call my ISP to delete her
> message.
>
> This is absolutely the GREATEST list (in my opinion) on the internet. We
> have all types of people, personalities, etc. I have gleaned some invaluable
> information and resources from this list. I love the people and the
> information that is available. I also like to feel that sometimes I am able
> to contribute a little something.
>
> I won't burden you anymore. Just thought this was necessary. I am a little
> "socially insensitive" at times (GEEZ, I LOVE THAT TERM!!) Whoever called me
> that, I just love it. I have more fun with that term....even the people at
> work call me "socially insensitive" now. Just love it.
>
> Take care all......Luv ya........Steve :)
| Message 5
Subject: Re: apology
From: "STEVE SPRING"
Date: Wed, 7 Mar 2001 01:36:53 -0600
Thanks Mike,
Needed that! Luv you guys........Steve
----- Original Message -----
From:
To:
Sent: Wednesday, March 07, 2001 4:15 AM
Subject: Re: apology
Ok Steve
dont worry we veterans on the group here are mighty forgiving tsk
tsk...weve dealt with this sort of thing before even kicked off a few
guys... nothing to worry about..just send a six-pack and a bunch of
roses for the wives to each listmember irrespective of place of origin.
These of course are to be sent DHL, and I like my beer cool at 8 deg
Celcius. Ohh.. there were some other suggestions last time we had this..
see not everyone drinks beer.. so please submit the standard order
sheet, well all be glad to fill it out. I know some on this list drink
"glugg" some "schnaps", and some aquaponic herbal teas,spirulina etc.
What does this all have to do with aquaponics?? Well it is said that
fish can tell the mental and emotional status of the hands that feed it
so we do wanna get back to forgiven status here and level the
vibes...soon... in case those fish start getting all fussy and skittish
again...
Well now that Ive forgiven U, I just wanted to let you know that the 3
year probation period still applies to you, even though you are a list
member..so any slip ups mate and WHOOoosh...
Hey..if you paid attention to my last mail.. re fungus gnats..
at the bottom..it says..
Keep smiling...
Hope you are.. or else..
Peace. :)
Mike.
JAMAICA
STEVE SPRING wrote:
>
> Hi All,
>
> I just want to make a "blanket" apology to this list, especially to
Adrianna
> G. I would have done this sooner, but I am just now coming off of one of
my
> marathon 7-day 12-hr noc shift runs. When I do these plus taking care of
my
> aquaponic system, it doesn't leave a lot of time. AND, I'm trying to
refrain
> from making any statements when I am "dog-dead" tired.
>
> I apparently stepped on some toes and hurt some feelings of some really,
> really nice friends regarding my previous comments concerning a (notice I
> didn't say "THE") hydroponics list.
>
> I was involved with "a" hydroponics list and asked some questions. I got
> some really "rude & crude" responses such as (I'll never forget it.)
> "....this just reeks of aquaponics. You have your own list, why bother us
> with this?" I also received a response from someone who said she was the
> list moderator. I don't remember her exact response. I do remember that it
> wasn't very kind. BUT, the "kicker" was that she (to use the term)
encrypted
> her email address that I couldn't get it out of my system. Really screwed
up
> my computer. As I said earlier, I had to actually call my ISP to delete
her
> message.
>
> This is absolutely the GREATEST list (in my opinion) on the internet. We
> have all types of people, personalities, etc. I have gleaned some
invaluable
> information and resources from this list. I love the people and the
> information that is available. I also like to feel that sometimes I am
able
> to contribute a little something.
>
> I won't burden you anymore. Just thought this was necessary. I am a little
> "socially insensitive" at times (GEEZ, I LOVE THAT TERM!!) Whoever called
me
> that, I just love it. I have more fun with that term....even the people at
> work call me "socially insensitive" now. Just love it.
>
> Take care all......Luv ya........Steve :)
| Message 6
Subject: Re: Hyacinth Leaf burn
From: "STEVE SPRING"
Date: Wed, 7 Mar 2001 01:50:01 -0600
Hi Mike (Jamaica),
Sometimes you screw up and the only solution is to admit that you are wrong
and as you say, "keep smiling". You have to keep smiling. If you don't,
you'll cry....and I don't like crying. The only way to guarantee failure is
to NOT TRY. Remember, unless you are the lead dog in the sled team, your
view never changes.
Just my thoughts. (No response necessary. Just glad that I still have some
friends out there.)
Take care my friend and thanks again.......Steve :)
----- Original Message -----
From:
To:
Sent: Wednesday, March 07, 2001 3:55 AM
Subject: Re: Hyacinth Leaf burn
Hi Steve,
I doubt that they are gnats. I know the gnats, and have sniffed a few
in my lifetime, so I know...:) these are tinier..
Uve hit a nail on the head or is it a hammer on my thumb...lets just say
your suggestion has hot home to me again the need to do
something...namely..last week I signed up with hotmail for their new
photo account thingee. It is my desire this year to start posting these
pics that I keep speaking about... and walking with my digicam.. and
asking more questions since a pic speaks a 1000 words...
Didnt we once say we were all gonna make a BIG photo site where we can
post pics...hmmm.
is that gone anywhere??? :)
Keeps smiling..
Mike...(JAMAICA)
STEVE SPRING wrote:
>
> Hi Mike,
>
> Your little black flies are probably "fungus gnats". Not to worry. They're
> harmless, but a 14k pain in the a.. They get up your nose and multiply
like
> crazy. (Not necessarily multiply in your nose.....sorry, couldn't resist
> that. :) ) I don't know of a cure for them. You can, however, reduce
their
> numbers by adding nematodes to your system and using the little yellow
> "sticky" strips. I did find out, quite by accident, that they are
> photolithic (sp) (light loving). I haven't tried this yet, but I want to.
I
> want to add a bug-zapper and see what it does. Just a thought.
>
> By the way, once you have them, learn to love them because you won't get
rid
> of them. They breed like crazy.
>
> Steve
>
> ----- Original Message -----
> From:
> To:
> Sent: Tuesday, March 06, 2001 4:11 PM
> Subject: Re: Hyacinth Leaf burn
>
> Interesting point Bruce...
>
> Now that U say it, Im not sure what leaf maggots are, but the leaves
> have also simultaneously been taken over by a lot of black tiny fly
> looking insects near to the bulb bases.
>
> Can someone tell me more on these leaf maggots? The leaves did have some
> black streaks in them when I took them from the natural river they where
> in...can it be they were infested from then??
>
> Regards,
> Mike.
>
> Bruce Schreiber wrote:
> >
> > Are you sure that your Hyacinths have leaf burn from the sun or do they
> > have a leaf maggot infestation? If your Hyacinths came from a hot house
> > in the north with artificial lights they will burn for a time when
> > placed under hot sun light but soon regenerate new leafs as they do best
> > in the tropics. But if you have a maggot infestation its caused by a
> > small tan moth about 1/4 inch in size they must be treated with the
> > (Bacillus thueriences spores) spelling? available at garden centers for
> > grub and caterpillar damage to recover and this stuff works excellent.
> > Bruce
>
--
"Faxes and emails are used by Barnetech Industrial Consultants as a
convenience for confidential, and often legally privileged, business
communications both within the firm and with clients. Disclosure to
parties other than addressees through for exampleforwarding, copying,
printing, distribution etc requires Barnetech Industrial Consultants
specific consent. Barnetech Industrial Consultants are not liable for
unauthorised disclosures nor for subsequent actions or omissions in
reliance upon them. If you have received this message in error please
notify us immediately and destroy all copies of it."
| Message 7
Subject: Re channels vs bed
From: "Tony Cooper"
Date: Wed, 7 Mar 2001 17:52:52 -0800
Juan C. Bobeda wrote:
> Tony,
> Are your channel bottoms horizontal or do the have a slope, if so what
slope? I
> would also like to know how you water the channels, only at the beginning
or are
> there several inputs. Finally, what plants have you grown successfully in
only
> 4" deep beds?
> Juan C. Bobeda
Juan,
My channels are are sloped toward the fish tank at about 1 inch for every 10
feet of channel, about 2 1/2" overall.
The water is pumped up a supply pipe to a small clarifier 30litres to the
high end, no other entry points are used.
I have grown tomatoes, lettuce, cucumbers, eggplant, chives, dill, bell
pepper, stringbeans, cauliflower, mint, as well as local flowers and
wetland plants and am currently trying cabbage and carrots which i will
transplant to soil when they are bigger, waste solids and water from the
clarifier are used for pots filled with soil.
Tall plants such as tomatoes stringbeans and cucumber are supported on nylon
twine strung along the length of the channels.
The shallow channels don't seem to affect the tomatoes growth, the roots
spread out laterally, usually 'upstream'.
I'm currently building a channel from 6" PVC split lengthwise so that will
be only 3" deep.
Tony Cooper
| Message 8
Subject: Fungus Gnats
From:
Date: Wed, 7 Mar 2001 14:57:57 +0200
>Your little black flies are probably "fungus gnats". Not to worry. They're
>harmless, but a 14k pain in the a.. They get up your nose and multiply like
>crazy.
I beg to differ with "harmless". The gnats themselves are harmless enough, but
their larvae, are not.
The larvae feed on plant roots, and can easily do enough damage to cause stunted
plants. They also harbour and transport Phithium spores around your system.
The last but one edition of PGH&H magazine had some quite scary microscope
pictures of fg larvae with their entire gut full of Phithium spores (zoospores,
I think).
Luckily they are not difficult to control, if you target the larvae. One
control is a bacillus, whose name escapes me now (I'll look it up if you like),
and others.
I have a hydro background as opposed to an aquaponics background, therefore this
information may not be totally applicable, but certainly in hydro, they are a
menace. The only point that occurs to me at this point is that the larvae may
not survive the trip through the fish tanks.
Sorry for piping-up without any practical aqua experience, but I could not leave
that statement unchallenged.
Craig
PS: PGH&H = Practical Greenhouse and Hydroponics (Abbreviation courtesy of the
hydro list)
| Message 9
Subject: Re: Freshwater Prawns
From: "Adriana Gutierrez"
Date: Wed, 7 Mar 2001 07:57:20 -0600
Good sites, Ted. Perhaps we could arrange for a group tour at the
reasearch station or request a Prawn Production Short Course?
On another topic, I'm curious, what greenhouse design have you decided
will be best for your next venture? I'm about to embark on setting up
a new operation her in "The Ham" and will be needing to purchase one.
If money was no object I'd be leaning toward naturally ventilated,
with gull-wing type vents.
Adriana
> http://www.msstate.edu/dept/crec/fwpres.html
>
> http://ag.ansc.purdue.edu/aquanic/publicat/state/ky/prawn.htm
>
| Message 10
Subject: Re: Technologies for Water Treatment
From: "Michael Kline"
Date: Wed, 07 Mar 2001 08:10:53 -0600
How about a solar distillation system ??
>>> CAVM 'at' aol.com 3/6/01 05:28:55 PM >>>
Is there a way to make drinking quality water out of river water, for=20
example, without using electricity? I would like to avoid chemicals also =
and=20
only use filtration or some process which can be powered with natural gas =
or=20
methane. I think that evaporation would be too inefficient though.
Neal Van Milligen
| Message 11
Subject: Re: Technologies for Water Treatment
From: "Adriana Gutierrez"
Date: Wed, 7 Mar 2001 08:14:56 -0600
Neal,
Have you checked the ECHO site? This would be right up their alley.
www.echonet.org
Adriana
> Is there a way to make drinking quality water out of river water,
for
> example, without using electricity? I would like to avoid chemicals
also and
> only use filtration or some process which can be powered with
natural gas or
> methane. I think that evaporation would be too inefficient though.
>
> Neal Van Milligen
>
| Message 12
Subject: Re: Hyacinth Leaf burn
From: "Adriana Gutierrez"
Date: Wed, 7 Mar 2001 08:28:09 -0600
Hi Mike,
Thrips are black and even smaller than fungus gnats...almost like
little specs of ash.
> I doubt that they are gnats. I know the gnats, and have sniffed a
few
> in my lifetime, so I know...:) these are tinier..
| Message 13
Subject: Re: apology
From: "Adriana Gutierrez"
Date: Wed, 7 Mar 2001 08:31:20 -0600
Hey Steve,
No more apologies or grovelling are required (and you can keep the
blanket). I never took your comments personally, I assumed they were
directed at all hydroponic types and I happen to be one of them ...but
I couldn't take it lying down :>)
Adriana
> I just want to make a "blanket" apology to this list, especially to
Adrianna
> G. I would have done this sooner, but I am just now coming off of
one of my
> marathon 7-day 12-hr noc shift runs.
| Message 14
Subject: pheromone bug traps
From: laberge 'at' cil.qc.ca (LABERGE MARC)
Date: Wed, 7 Mar 2001 10:09:04 -0500
A few years ago, I had this brilliant idea; I do renovations and was the
mister-fix-it for many of the restaurants at Mont Tremblant up here in
Quebec. Many of the bars had a fruit fly problem associated with the lime in
the left over beers. They asked me if I could think of a way to get rid of
these little pests. I remembered the pheromone story in my biology text
book, about the scientist who was working with butterfly pheromones. He
washed his hands after working in his lab, then went off to the ball game.
During the game millions of butterflies entered the stadium and were flying
all around him. He then realized how powerful pheromones were...
I got the idea to sell little ornament bug traps and was going to use the
appropriate pheromones to attract the flies. I searched the net to see any
competitors and found none....I left the project for a few years on the back
burner, then did another search on the net and found many companies already
selling pheromone fly traps...oh well...got back into aquaponics...
Do any of you use or know of these fly traps ?
Marc Laberge
Mont Tremblant
Quebec , Canada
| Message 15
Subject: RE: Technologies for Water Treatment
From: "Nick Kemp"
Date: Wed, 7 Mar 2001 08:24:48 -0600
IMHO >>>
It all depends:
- What is in your water
- How clean does it need to be
- What kind of "work" needs to be done
The best method of purifying water is distillation. Depending on what is in
the water, it may cause other problems. For example if the water was boiled
in a home it may outgas certain toxins that would reduce the indoor air
quality. It is for that reason that the best indoor humidification system
is plants followed by a double steam system. Remember also that whatever
you condense the water vapor on needs to be clean and non-toxic or those
substances will be picked up by the condensate (for example if you have a
galvanized plate for condensation, your water will absorb the zinc and
possibly other substances). Another concern is what might be growing on the
condenser plates such as mold, mildew, bacteria, etc.
The next best system is Reverse Osmosis (RO). You will need a pressure
differential between the two sides of the membrane in order for RO to work.
If the difference is small, RO systems will not produce much purified water.
It is wise to filter the water a lot before running it in the RO filter so
that as much of the larger solids will be removed and the RO filters last as
long as possible. Note also the RO units do not remove all toxins and that
you need to check with the vendor to determine their effectiveness.
Your fuel source effectiveness depends on the work that need to be done.
For example gas will not be real helpful if the work that needs to be done
is to increase the water pressure for a RO unit (a gas powered pump will be
ok for continuous pumping but not as good for a household drinking system
requiring frequent starts. Gas will be helpful if you are trying to raise
the water temperature. Also consider the good old fashion windmill and
water tank. Pump it with wind to sufficient level to get the pressure you
need.
I would suggest starting with a well near the river so that you can utilize
the natural filtration of the soil as a starting spot.
Nick Kemp
NOTE: These facts are subject to being wrong without notice:-)
-----Original Message-----
From: aquaponics-request 'at' townsqr.com
[mailto:aquaponics-request 'at' townsqr.com]On Behalf Of CAVM 'at' aol.com
Sent: Tuesday, March 06, 2001 5:29 PM
To: aquaponics 'at' townsqr.com
Subject: Re: Technologies for Water Treatment
Is there a way to make drinking quality water out of river water, for
example, without using electricity? I would like to avoid chemicals also
and
only use filtration or some process which can be powered with natural gas or
methane. I think that evaporation would be too inefficient though.
Neal Van Milligen
| Message 16
Subject: Re: Technologies for Water Treatment
From: CAVM 'at' aol.com
Date: Wed, 7 Mar 2001 11:05:17 EST
In a message dated 3/7/2001 9:54:47 AM Central Standard Time,
nkemp 'at' pclink.com writes:
<<
NOTE: These facts are subject to being wrong without notice:-) >>
You folks have been very helpful. I certainly appreciate all of your
comments. As you can tell, I am trying to consider what all of the
reasonable options are for this system. The point is to make clean drinking
water in a remote situation where electricity is probably not available or at
great cost. The water will not only be used by humans but by livestock
(fish?) if enough is available. The fish will get the benefit of the clean
water by being processed into food in a clean environment, not by being
raised in it.
| Message 17
Subject: Re: pheromone bug traps
From: "Michael Kline"
Date: Wed, 07 Mar 2001 10:14:10 -0600
Up.
>>> laberge 'at' cil.qc.ca 3/7/01 09:09:04 AM >>>
A few years ago, I had this brilliant idea; I do renovations and was the
mister-fix-it for many of the restaurants at Mont Tremblant up here in
Quebec. Many of the bars had a fruit fly problem associated with the lime =
in
the left over beers. They asked me if I could think of a way to get rid of
these little pests. I remembered the pheromone story in my biology text
book, about the scientist who was working with butterfly pheromones. He
washed his hands after working in his lab, then went off to the ball game.
During the game millions of butterflies entered the stadium and were =
flying
all around him. He then realized how powerful pheromones were...
I got the idea to sell little ornament bug traps and was going to use the
appropriate pheromones to attract the flies. I searched the net to see any
competitors and found none....I left the project for a few years on the =
back
burner, then did another search on the net and found many companies =
already
selling pheromone fly traps...oh well...got back into aquaponics...
Do any of you use or know of these fly traps ?
Marc Laberge
Mont Tremblant
Quebec , Canada
| Message 18
Subject: Re:Tanks- Braun Industries - Tue 03/06/01
From: Jai Mani
Date: Wed, 7 Mar 2001 08:30:40 -0800 (PST)
Hello everyone,
The other day I asked about contacts
for Braun Industries, the manufacturers of the same
plywood size sheets I mentioned.
I wanted to use these to build tanks
8'x4'x4', and I have noticed that many people have
been talking about this on the list ^the tank thread^.
This company makes the sheets in the
color white or any other color I guess. The sheets
from what I remember are very good to replace
fiberglass coated ply and they are like plexiglass but
only thicker and non-yellowing etc..
I guess all you'd have to do is cut to size and seal
the edges with epoxy or any other method that works.
This company might be the solution. I am still trying
to find it and how I can contact them.
anyone remember seeing mention of this company in the
past in any of the threads?
thanks,
jai
__________________________________________________
Do You Yahoo!?
Get email at your own domain with Yahoo! Mail.
http://personal.mail.yahoo.com/
| Message 19
Subject: Re: Fish cancer/fungus
From: "Adriana Gutierrez"
Date: Wed, 7 Mar 2001 10:32:39 -0600
> The fish look like thay are being eaten, usually at tail, anus or
fin but it
> can be anywhere.
Could it be "furnculosis" or "columnaris"? This is from course
materials from an Aquaculture worksop:
FURUNCULOSIS
----------------------
"Chronic furunculosis usually occurs in older fish and one or more
furncules are present on the flank."
It affects all of the internal organs and is caused by aeromonas
salmonicida. In gold fish it shows up as ulcers, in carp
erythrodermatitis, ulcer disease in trout and systemic infections
among several warmwater and marine species.
Diagnosis can be difficult because some of the strains are slow
growing and clinical signs vary. It is transmitted by contact with
contaminated water or infected fish. The bacteria can survive up to 6
days on DRY nets, 32 days in tissues of dead fish.
CONTROL -" methods include both prevention and treatment with
anti-microbial drugs. Effective control procedures have been
developed for salmonid and trout ulcer disease but not for GUD, CE and
infections of warmwater and marine species." I assume tilapia fall
into the latter category so there is no cure... Therapy for infected
salmonids and trout is sulfamerazine and oxytetracylcine with
treatment terminated 3 weeks before the fish are released. There are
other treatments but they have not been approved by the FDA.
PREVENTION - obtaining fish eggs or fish from sources CERTIFIED free
of furunculosis or trout ulcer disease. Non-certified eggs can be
disinfected by submersion in iodine complexes.
COLUMNARIS
-----------------
Columnaris disease is an acute to chronic bacterial infection that
affects...virtually all species of warmwater fishes.
CLINICAL SIGNS _ it begins on the gils and body surfaces and the
lesions tend to vary with the fish. "In scaleless fish such as the
catfishes initial lesions are small and circular and have gray-blue
necrotic centers and red margins surrounded by a ring of inflamed
skin. As the disease progresses the lesions spread and may cover most
of the body. In scaled fish the lesions begin at the outer margins of
the fins and spread inward towards the body."
It is transmitted from fish to fish.
TREATMENT - there are a number of effective chemicals and
antibacterials but NONE are registered with the USDA.
"At this time the only chemicals and drugs registered by the FDA for
use for FOOD FISH are copper sulfate, 2,4-D, diquat, dibromide,
endothall, lime, sodium chloride (salt), simazine, sulfamerazine, and
Terramycin.
The US Department of the Interior publishes a series of Fish Disease
Leaflets which provide diagnostic and treatment information.
Good luck. It sounds like you need to find a fish expert, maybe
through you state Fish and Wildlife Department to do laboratory
testing to come up with a definitive diagnosis.
Adriana
| Message 20
Subject: Re: Technologies for Water Treatment
From: Mark Hooper
Date: Wed, 07 Mar 2001 10:48:14 -0600
Vortex water separator!
I have been lurking for about a year, now a topic I may be able to
contribute to!
As background information, after living at my old house for about 12
years I had my well water tested by my Ph.D. Nutritionist who found all
kinds of nasties including, heavy metals, pesticide, and solvents!
Fortunately we had always used a RO filter for drinking water but
undoubtedly we had been absorbing some of this nasty stuff from the
bath water. Just before getting the well water test result I was
exposed
to a Vortex water separator built by a company in San Antonio.
I borrowed a unit and had a sample of its output tested. My Ph.D.
friend called and said "What is this thing?", EVERY contaminate had
been removed!!!!
Having just bought a new RO with UV filter I could not afford the
~$1200 they wanted for the Vortex so I did some research and "reverse
engineering" and built my own unit. After testing it my Ph.D. friend
and several of her friends had me build them ones.
We have now moved from that location and just this last weekend got
the new house finished enough to move in. I have not yet built a
Vortex for the new location, (we've been drinking bought distilled
water and working on getting the roof up) but now that we are sort of
moved in it's getting close to the top of the priority list. And when
I do, I'll tool up to be able to make more than just the one I need.
Enough rambling, how does the thing work? Take a bucket and fill it
with muddy water, then take your water hose and squirt water in on a
tangent at the edge of the bucket and get the water rotating counter
clockwise. You will notice that the mud moves to the center of the water
column, not to the outer edge as you would think centrifugal force
would move it. In a Vortex water separator the contaminates are simply
drained off from the bottom center of the water column. You can see
a picture at:
http://www.bahnhof.se/~grappo/metaphysics/Centripete.html
With my old well water it took 6 stages in series to remove all the
contaminates, so for extra margin I used eight stages.
And for a no electricity location it could be fed from a gravity tank
that was filled by hand from a pump or bucket.
Mark Hooper
CAVM 'at' aol.com wrote:
>
> Is there a way to make drinking quality water out of river water, for
> example, without using electricity? I would like to avoid chemicals also and
> only use filtration or some process which can be powered with natural gas or
> methane. I think that evaporation would be too inefficient though.
>
> Neal Van Milligen
| Message 21
Subject: Re: Technologies for Water Treatment
From: marc 'at' aculink.net
Date: Wed, 07 Mar 2001 10:17:15 -0700
Possibly - but what is it you need to accomplish? There is
no one technique that covers all needs.
Definition of what or where you want to go will create the
roadmap that determines the resources you need to do it.
There are many ways to skin a cat. Do you have a credible
water analysis in hand? Does the character of the river
water change seasonally?
The water treatment industry is quite non regulated and
hoaxes abound out there. On this list the various schemes
can be submitted for evaluation so to keep a hoax from
invading one's wallet. Magnets for softening are a good
example of a waste of time and money. Most often the hoaxes
will have some type of magnetism or electromagnetism claim.
If one of them ever worked it would create front page news -
especially in California where salinity from softeners is a
problem.
Typically water treatment is doing something to modify the
character of your water supply. What character do you need
to deal with? Disease, minerals, pollution, temperature, pH.
Marc Nameth
CAVM 'at' aol.com wrote:
>
> Is there a way to make drinking quality water out of river water, for
> example, without using electricity? I would like to avoid chemicals also and
> only use filtration or some process which can be powered with natural gas or
> methane. I think that evaporation would be too inefficient though.
>
> Neal Van Milligen
| Message 22
Subject: Re: Technologies for Water Treatment
From: dreadlox 'at' cwjamaica.com
Date: Wed, 07 Mar 2001 16:24:54 -0800
Guys, look at http://www.redrok.com/main.htm#water
I hope to build a tracked solar water heater/oven/distiller one day too.
Mike.
Kline wrote:
>
> How about a solar distillation system ??
>
> >>> CAVM 'at' aol.com 3/6/01 05:28:55 PM >>>
> Is there a way to make drinking quality water out of river water, for
> example, without using electricity? I would like to avoid chemicals also and
> only use filtration or some process which can be powered with natural gas or
> methane. I think that evaporation would be too inefficient though.
>
> Neal Van Milligen
--
"Faxes and emails are used by Barnetech Industrial Consultants as a
convenience for confidential, and often legally privileged, business
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notify us immediately and destroy all copies of it."
| Message 23
Subject: Re: Fungus Gnats
From: dreadlox 'at' cwjamaica.com
Date: Wed, 07 Mar 2001 16:26:43 -0800
Does the look "scorched" have anything to do with the way a plant looks
after these larvae infest it?? A novice asking here...
Mike.
(JAMAICA)
CpJohnson 'at' edgars.co.za wrote:
>
> I beg to differ with "harmless". The gnats themselves are harmless enough, but their larvae,
are not.
>
> The larvae feed on plant roots, and can easily do enough damage to cause stunted plants.
| Message 24
Subject: Re: Fungus Gnats
From: laberge 'at' cil.qc.ca (LABERGE MARC)
Date: Wed, 7 Mar 2001 17:01:36 -0500
Mike , fungus gnat larvae will feed on the root system causing the plant to
collapse. Once the plants collapse, they become susceptible to diseases, the
adult flies can quickly spread the diseases from plant to plant. The
scorching sounds like a ventilation problem, not a bug one. ( sorry if
you've already heard this, I haven't been following the discussion ).
Marc
-----Original Message-----
From: dreadlox 'at' cwjamaica.com
To: aquaponics 'at' townsqr.com
Date: Wednesday, March 07, 2001 4:23 PM
Subject: Re: Fungus Gnats
>Does the look "scorched" have anything to do with the way a plant looks
>after these larvae infest it?? A novice asking here...
>
>Mike.
>(JAMAICA)
>
>
>CpJohnson 'at' edgars.co.za wrote:
>>
>> I beg to differ with "harmless". The gnats themselves are harmless
enough, but their larvae, are not.
>>
>> The larvae feed on plant roots, and can easily do enough damage to cause
stunted plants.
| Message 25
Subject: Up...
From: laberge 'at' cil.qc.ca (LABERGE MARC)
Date: Wed, 7 Mar 2001 17:04:05 -0500
Micheal.... care to explain your comment ??
Marc Laberge
Mont Tremblant
Quebec , Canada
| Message 26
Subject: Re: Up...
From: "Michael Kline"
Date: Wed, 07 Mar 2001 16:20:58 -0600
Sorry, a typo,... I meant "Yup" as in yes I have heard of them.
>>> laberge 'at' cil.qc.ca 3/7/01 04:04:05 PM >>>
Micheal.... care to explain your comment ??
Marc Laberge
Mont Tremblant
Quebec , Canada
| Message 27
Subject: Re: Hyacinth Leaf burn
From: cmccarth 'at' wvu.edu
Date: Wed, 07 Mar 2001 17:43:11 -0500
At 08:28 AM 3/7/01 -0600, you wrote:
>
>Thrips are black and even smaller than fungus gnats...almost like
>little specs of ash.
>> I doubt that they are gnats. I know the gnats, and have sniffed a
>few
>> in my lifetime, so I know...:) these are tinier..
Young Thrips often appear yellow, and today I saw one that looked green
under the microscope. (I had the ID checked by an entomologist to be sure).
Older adult Thrips do tend to be darker and may appear black. Sorry, just
had to add to the confusion.
Carol.
| Message 28
Subject: RE: Technologies for Water Treatment
From: "Carlos R. Arano"
Date: Thu, 8 Mar 2001 08:25:12 -0300
Neal:
See
El Paso Solar Energy Association
and
www.solaqua.com
Maybe it will be useful for you.
Carlos
----- Original Message -----
From:
To:
Sent: Tuesday, March 06, 2001 8:28 PM
Subject: Re: Technologies for Water Treatment
> Is there a way to make drinking quality water out of river water, for
> example, without using electricity? I would like to avoid chemicals also
and
> only use filtration or some process which can be powered with natural gas
or
> methane. I think that evaporation would be too inefficient though.
>
> Neal Van Milligen
>
| Message 29
Subject: RE: Technologies for Water Treatment -- Reply
From: "Carlos R. Arano"
Date: Thu, 8 Mar 2001 07:52:26 -0300
This is a multi-part message in MIME format.
------=_NextPart_000_000E_01C0A7A4.B77A61E0
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Bill:
Please let me know what "Brita" is.
Thank you,
Carlos
----- Original Message -----=20
From: Wjp1816 'at' aol.com=20
To: aquaponics 'at' townsqr.com=20
Sent: Tuesday, March 06, 2001 9:24 PM
Subject: Re: Technologies for Water Treatment -- Reply
Neal Van Milligen,=20
When you start getting into a filtration system for river water you =
are=20
entering a gigantic operation. Do you know the content of the water? =
What=20
chemicals, disolved solids and other substances are in the water?=20
Without expensive testing the best process would be distilation.=20
There are some good filtration systems on the market but they are =
designed=20
for household use with a controlled amount of substances.=20
I would also like to know if anyone had found a good system. My water =
here=20
in Albany contains 388 particles of disolved solids. I pass this =
through a=20
Brita and it is reduced by approximately 90 particles. I have been =
thinking=20
of adding another Brita in tandom to see if I can get down even more. =
Maybe=20
in the next few weeks.=20
Bill Pizer=20
------=_NextPart_000_000E_01C0A7A4.B77A61E0
Content-Type: text/html;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Bill:
Please let me know what "Brita" =
is.
Thank you,
Carlos
----- Original Message -----
From:=20
Wjp1816 'at' aol.com=20
To: aquaponics 'at' townsqr.com
Sent: Tuesday, March 06, 2001 =
9:24=20
PM
Subject: Re: Technologies for =
Water=20
Treatment -- Reply
Neal Van =
Milligen,=20
When you start getting into a filtration system for river =
water you=20
are
entering a gigantic operation. Do you know the content =
of the=20
water? What
chemicals, disolved solids and other substances =
are in=20
the water?
Without expensive testing the best process would be =
distilation.
There are some good filtration systems on the =
market but=20
they are designed
for household use with a controlled amount of=20
substances.
I would also like to know if anyone had found a =
good=20
system. My water here
in Albany contains 388 particles of =
disolved=20
solids. I pass this through a
Brita and it is reduced by=20
approximately 90 particles. I have been thinking
of adding =
another=20
Brita in tandom to see if I can get down even more. Maybe
in =
the=20
next few weeks.
Bill Pizer=20
------=_NextPart_000_000E_01C0A7A4.B77A61E0--
| Message 30
Subject: Re: Re channels vs bed
From: "Juan C. Bobeda"
Date: Wed, 07 Mar 2001 22:09:30 -0400
Tony,
Thanks for your detailed information. How often do you have to clean your
clarifier? Have you ever considered digesting the solids retained in the
clarifier in a small anaerobic tank?
How many channels does your system have and what is the water flow in each
channel?
I would also like to know the size of your fish tank.
The reason I am asking so many questions is that I am about to start an
aquaponic system and am trying to learn as much as possible about the different
setups.
We have a very hot climate here in Paraguay and I am kind of concerned about the
temperature in the media and if it might affect the plant growth.
Juan C. Bobeda
Tony Cooper wrote:
> Juan C. Bobeda wrote:
> > Tony,
> > Are your channel bottoms horizontal or do the have a slope, if so what
> slope? I
> > would also like to know how you water the channels, only at the beginning
> or are
> > there several inputs. Finally, what plants have you grown successfully in
> only
> > 4" deep beds?
> > Juan C. Bobeda
>
> Juan,
> My channels are are sloped toward the fish tank at about 1 inch for every 10
> feet of channel, about 2 1/2" overall.
> The water is pumped up a supply pipe to a small clarifier 30litres to the
> high end, no other entry points are used.
> I have grown tomatoes, lettuce, cucumbers, eggplant, chives, dill, bell
> pepper, stringbeans, cauliflower, mint, as well as local flowers and
> wetland plants and am currently trying cabbage and carrots which i will
> transplant to soil when they are bigger, waste solids and water from the
> clarifier are used for pots filled with soil.
> Tall plants such as tomatoes stringbeans and cucumber are supported on nylon
> twine strung along the length of the channels.
> The shallow channels don't seem to affect the tomatoes growth, the roots
> spread out laterally, usually 'upstream'.
> I'm currently building a channel from 6" PVC split lengthwise so that will
> be only 3" deep.
> Tony Cooper
| Message 31
Subject: Re: Fungus Gnats
From: "Juan C. Bobeda"
Date: Wed, 07 Mar 2001 22:16:34 -0400
Craig,
The roots of my lettuce in a floating hydroponic system are constantly being
attacked by fungus gnat larvae. I would really appreciate it if you could tell me
exactly which bacillus it is that controls these larvae?
Thanks in advance,
Juan C. Bobeda
CpJohnson 'at' edgars.co.za wrote:
> >Your little black flies are probably "fungus gnats". Not to worry. They're
> >harmless, but a 14k pain in the a.. They get up your nose and multiply like
> >crazy.
>
> I beg to differ with "harmless". The gnats themselves are harmless enough, but
> their larvae, are not.
>
> The larvae feed on plant roots, and can easily do enough damage to cause stunted
> plants. They also harbour and transport Phithium spores around your system.
> The last but one edition of PGH&H magazine had some quite scary microscope
> pictures of fg larvae with their entire gut full of Phithium spores (zoospores,
> I think).
>
> Luckily they are not difficult to control, if you target the larvae. One
> control is a bacillus, whose name escapes me now (I'll look it up if you like),
> and others.
>
> I have a hydro background as opposed to an aquaponics background, therefore this
> information may not be totally applicable, but certainly in hydro, they are a
> menace. The only point that occurs to me at this point is that the larvae may
> not survive the trip through the fish tanks.
>
> Sorry for piping-up without any practical aqua experience, but I could not leave
> that statement unchallenged.
>
> Craig
>
> PS: PGH&H = Practical Greenhouse and Hydroponics (Abbreviation courtesy of the
> hydro list)
| Message 32
Subject: RE: Tanks- Braun Industries - Tue 03/06/01
From: Darren Pearce
Date: Wed, 7 Mar 2001 21:38:33 -0500
Jai
This is an interesting alternative.I didn't notice any pricing info on their
site, but I'm going to check into it.
http://www.richlite.com/whaleboard.html
Darren
>===== Original Message From Jai Mani =====
>Hello everyone,
> The other day I asked about contacts
>for Braun Industries, the manufacturers of the same
>plywood size sheets I mentioned.
> I wanted to use these to build tanks
>8'x4'x4', and I have noticed that many people have
>been talking about this on the list ^the tank thread^.
>
> This company makes the sheets in the
>color white or any other color I guess. The sheets
>from what I remember are very good to replace
>fiberglass coated ply and they are like plexiglass but
>only thicker and non-yellowing etc..
>
>I guess all you'd have to do is cut to size and seal
>the edges with epoxy or any other method that works.
>
>This company might be the solution. I am still trying
>to find it and how I can contact them.
>
>anyone remember seeing mention of this company in the
>past in any of the threads?
>
>thanks,
>jai
>
>__________________________________________________
>Do You Yahoo!?
>Get email at your own domain with Yahoo! Mail.
>http://personal.mail.yahoo.com/
| Message 33
Subject: American Tilapia Association and Philippines pages
From: S & S Aqua Farm
Date: Wed, 07 Mar 2001 22:13:16 -0600
The home page(s) for the American Tilapia Association are located at both
the below URLs:
http://www.tilapia.org
http://ag.arizona.edu/azaqua/ata.html
Regarding membership costs, the following statement is on their membership page:
MEMBERSHIP The ATA is an open Association with members around the world.
Although the focus has been on the developments and marketing in the US, the
fundamentals of Tilapia culture and genetics have worldwide implications and
overseas enthusiasts are welcome to participate. The ATA is a member of
the National Aquaculture Association (NAA) and is open to membership
worldwide. Members receive a quarterly newsletter, discounts on
registration for World Aquaculture and other industry meetings and discounts
on tilapia reference books published by the Association.
Memberships are good for 12 months after receipt at the home office:
Supporter member (producers and industry suppliers) $100
Active member (farm employees, buyers, potential producers) $50
Sustaining member (educators, hobbyists, interested individuals) $25
I also noticed a section devoted to aquaculture in the Philippines and
thought some of you might be interested:
http://ag.arizona.edu/azaqua/philippines/clsu.htm
This is a very good resource for many types of tilapia information....I
highly recommend it.
Paula Speraneo
S&S Aqua Farm, 8386 County Road 8820, West Plains, MO 65775 417-256-5124
Web page http://www.townsqr.com/snsaqua/
| Message 34
Subject: Re: Technologies for Water Treatment
From: "Juan C. Bobeda"
Date: Thu, 08 Mar 2001 00:55:14 -0400
Neal,
If your river water is unpolluted you can use Slow Sand Filtration of the type
now used in many NFT systems to keep the nutrient solution disinfected. This type
of water treatment simply filters water slowly through a sand bed (I don't
remember the rate right now but I can look it up if you wish) and has to be in
sunlight, after being in use for a couple of days a bacterial sludge layer forms
on the sand surface and retains most impurities and can give you water of
drinking quality.
Juan C. Bobeda
CAVM 'at' aol.com wrote:
> Is there a way to make drinking quality water out of river water, for
> example, without using electricity? I would like to avoid chemicals also and
> only use filtration or some process which can be powered with natural gas or
> methane. I think that evaporation would be too inefficient though.
>
> Neal Van Milligen
|
