Aquaponics Digest - Wed 07/28/99
Message 1: Re: Aluminum roof pans, red lettuces
from Adriana Gutierrez & Dennis LaGatta
Message 2: Re: SGVGA Meeting
from Ron Neujahr
Message 3: Watercress
from Joy Pye-MacSwain
Message 4: FYI - Call for Abstracts
from "Charlie Shultz"
Message 5: Re: SGVGA Meeting
from "JAY MYERS"
Message 6: RE: Watercress
from "Ronald W. Brooks"
Message 7: Re: SGVGA Meeting
from "vpage"
Message 8: Re: RE: Watercress
from Bagelhole1
Message 9: RE: RE: Watercress
from "Ronald W. Brooks"
Message 10: Re: SGVGA Meeting
from atkindw@cwjamaica.com (david w atkinson)
.------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
| Message 1 |
'------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
Subject: Re: Aluminum roof pans, red lettuces
From: Adriana Gutierrez & Dennis LaGatta
Date: Wed, 28 Jul 1999 08:10:49 -0400
The roof pans are very strong. You need to add support every 3-4 feet to
avoid sagging. They come in 3 gauges of metal, for this application you
buy the tickest one.
> Will the roof pans hold much weight if properly supported? Say about 450
> lbs of water.
Galactic is billed as a type of Redina which is of the grand rapids
variety. When you check it out in Johnnys catalog page 32. In the
greenhouse the color is nowhere near as red.
Speaking of red lettuces, here are a few more varieties which were not
successful in our bright sun and hot weather and humidity: Mikola,
Ruby, Redina, Red Rage, Impuls, Red Orach, Bacardi(OE), Mascara (OE),
Raisa (OE). All seeds were from Johnny's except for the ones marked
(OE) which came from Ornamental Edibles. The plants weren't a total
loss, the grew well but were very green. These varieties may have
better color in areas with cooler weather or greater day-night
temperature differentials than we have here in Florida.
> We grow a lot of Cerize with the Revolution, both do really well here for
> salad mixes. Can't remember if we tried Galactic. What type is it?
Adriana
.------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
| Message 2 |
'------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
Subject: Re: SGVGA Meeting
From: Ron Neujahr
Date: Wed, 28 Jul 1999 07:55:03 -0500
Paula,
Yes we have now completed the last annual conference of the SGVGA for
this century. We had a very good program for all skill levels in both
hydroponics and aquaponics.
Our conference next year will be held in Tyler again, in 2000. The
dates are July 14 -16, 2000. We have started making plans, have
scheduled a tour and are making arrangements for speakers.
So any who would like more information on upcoming event of SGVGA of
2000, please reply and I will put you on our active email news group
list.
You all have a great day,
Ron Neujahr
President, SGVGA
.------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
| Message 3 |
'------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
Subject: Watercress
From: Joy Pye-MacSwain
Date: Wed, 28 Jul 1999 10:10:58 -0300
> Morning Ron........
This whole discussion on Y2K has been very interesting. However, since I have a
couple of computer programer friends who were specifically employed in
correcting
Y2K problems in Federal government departments who have recently been laid
off because all the systems are completely ready for January, I have taken a
more
jaundiced view of the problems that Y2K may create, at least here in Canada.
Anyway your most recent response to Tom has sparked a couple of questions.
> When we talk about feed to growth rate we are talking about feeding a
> complete pellet diet. I feed at 4% of body weight . While the fish will eat
My fish are still only fingerlings, about 1.2 g and i am feeding them at a rate
of about
6% body weight per day (5 satiation feedings per day). I am assuming that your
4%
rate is for older fish?
>
> all the algae that grows and certain greens that you throw in you should
> expect to almost double the time to harvest if that is all that is feed. As
> for worms , some people have had luck but Tilapia are vegetarians by
> nature. Plus you would have to have a facility that is almost an acre to be
> able to feed the amount of worms needed. I just don't think it would be
> feasible in sustainable situation. I am running water hyacinth and water
> cress in the settling tanks and the fish then are fed free choice of these
> plants. It seems to stimulate the appetite.
I am planning on adding watercress to the facility, any advice on how much
watercress that I should offer to the fish on any given day and do I need to
wait
for them to reach a certain size before offering them the cress?
Also can anyone offer some advice on tomatoe plants? Mine were doing fine
until I transplanted into pea gravel and after couple of weeks I noticed brown
spots
in the lower leaves. I am assuming I have a magnessium deficiency and plan on
spraying with a 2% solution of epsom salts today ... however if anyone has any
other suggestions I would love to hear them. Thanks.
Joy
.------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
| Message 4 |
'------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
Subject: FYI - Call for Abstracts
From: "Charlie Shultz"
Date: Wed, 28 Jul 1999 06:10:52 PDT
1st CALL FOR ABSTRACTS
Internet Conference on Material Flow Analysis of Integrated Bio-Systems
(March-Oct 2000)
The Institute of Advanced Studies of the United Nations University (Tokyo)
(http://www.ias.unu.edu) and the UNU/IAS Integrated Bio-Systems Network
(http://www.ias.unu.edu/proceedings/icibs/ibs/ibsnet), in cooperation with
other organizations, welcome authors to submit abstracts of papers for the
Internet Conference on Material Flow Analysis of Integrated Bio-Systems
(IC-MFA-IBS) between March and October 2000.
The Conference (IC-MFA-IBS) is a follow-up of the 1998 Internet Conference
on Integrated Bio-Systems (http://www.ias.unu.edu/proceedings/icibs) and
other Internet conferences that were organized on the use of ecotechnology
(1994) and ecological engineering (1995, 1996) in integrated bio-systems.
IC-MFA-IBS will provide papers on the web for discussions via the web and
email. The goal of the conference is to facilitate a dialogue, with the
objective of generating information that is useful to academia, industry,
governmental and non-governmental organizations and funding agencies, on
the role and application of integrated bio-systems in zero waste and
emission, food production and security, sustainable industrial and
agricultural development and climate change.
An integrated bio-system (IBS) integrates at least 2 sub-systems so that
the wastes generated by the first system are used by the next biological
sub-system to produce value-added products. A common example is the use of
animal manure from a livestock sub-system to produce biogas and then using
nutrients in the digested slurry for crop and fish production. The general
aim of an IBS is to turn material flow with losses into a closed and
integrated one. IBSs can be designed for a number of purposes, e.g. to
enhance resource and waste uilisation in agriculture, aquaculture, industry
and for eco-buildings, human communities and cities (see
http://www.ias.unu.edu/proceedings/icibs/ibs/info for more examples). The
material flow analysis (MFA) is key to the design and operation of an IBS.
By quantifying the material flows, useful information is generated to
solve problems, to make systems more robust to changes and for the
development of new ideas, planning of projects, and decision and policy
making.
SCOPE
This Internet Conference will have a central focus on the analysis of
material flows in integrated bio-systems. The organisers welcome abstracts
of papers that can describe and quantify the flow of materials in existing
and conceptual bio-systems under the following themes :
1) Municipal Biodegradable Solid Recycling and Conversion Systems
MFA of systems that includes recycling and conversion of biodegradables,
food scraps, yard trimmings and greens into bio-fuels, organic fertiliser,
animal feed, biochemicals, etc. using biological sub-systems such as
anaerobic digestion, composting, vermi-culture, etc.. New methods,
alternative natural systems for control or remediation to avoid the need
for landfills, conventional wastewater plants,
etc.
2) Wastewater Treatment and Utilisation Systems
MFA of systems using plants, microbes, shellfish in wastewater treatment
and use of wastewaters in crop irrigation, aquaculture, wetlands, forests,
etc. crop-aquaculture, livestock-aquaculture systems, integrated
aquaculture/polyculture systems, etc..
3) Integrated Aquaculture Systems
MFA of aquatic food production systems such as integrated
aquaculture/polyculture systems, fish-shellfish-seaweed systems,
aquaculture-terrestrial integrated bio-systems, silvifisheries, fish
ranching, etc.
4) Small Scale Farming Systems
MFA of household bio-systems with sub-systems like livestock, biogas
digesters, fish ponds, compost, vermicompost, vegetable gardens and crops
plots, fruit trees, aquatic plants, etc.
5) Large Plantations, Farms and Feedlots
MFA of corporate and cooperative agricultural systems using of agro-crop
residues and livestock manure for production of feed, food, fibre,
chemicals, energy, etc.
6) Constructed Building Complex, greenhouse and Eco-house Systems
MFA of bio-systems in/on buildings for waste water treatment, food
production, hydroponics, aquaponics; waste recycling or using animals and
compost to heat greenhouses, etc.
7) Industry and Eco-Industrial Parks
MFA of bio-systems for cleaner production, industries and industrial parks
to utilise primary by-product wastes for biochemicals, food and energy
production in co-operative implmentation of shared systems for
complementary recovery and use.
8) Resource Utilization and Conservation in Sustainable Eco-Systems
MFA of bio-systems for sustainable resource utilisation e.g. in watersheds,
reservoirs, lakes, river basins, community forests, natural parks, coral
reefs, mangroves, etc..
9) Small Islands, Community, Villages and Cities
MFA of IBSs for sustainable living in human communities and for urban
ecology and environmental management
10) Global Issues related to Food Security, Environment and Climate Change
e.g. regional studies where integrated bio-systems are used to play crucial
roles to sustain food security, zero emissions and wastes; and reduction of
greenhouse gases.
11) Tools and Methodology for Design and Analysis of Integrated
Bio-Systems.
e.g. softwares and methods for material flow analysis
PROCEDURE FOR SUBMISSION AND REVIEW OF ABSTRACTS
Abstracts should not be more than 1 page in size and may contain text,
table, diagrams. It should include title of paper, full name(s) and postal
and email address(es) of author(s), abstract and keywords. Please send
abstracts to foo@swipnet.se.
All submitted abstracts will be reviewed by the Planning Group of the
Conference. Authors should wait for formal notification of acceptance
before proceeding into preparation of the full papers.
DEADLINE FOR SUBMISSION OF ABSTRACTS
The deadline for the 1st Call for Abstracts is Oct 31, 1999.
A 2nd Call for Abstracts will be made at a later date, if needed.
CONFERENCE INFORMATION
General information is available at
http://www.ias.unu.edu/proceedings/icibs/ic-mfa/
Future announcements will be made via
http://segate.sunet.se/archives/et-w11.html
.------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
| Message 5 |
'------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
Subject: Re: SGVGA Meeting
From: "JAY MYERS"
Date: Wed, 28 Jul 1999 08:41:57 -0500
Please put me on you active e-mail news group list.
Thanks very much
Jay Myers
.------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
| Message 6 |
'------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
Subject: RE: Watercress
From: "Ronald W. Brooks"
Date: Wed, 28 Jul 1999 10:36:26 -0400
-> [mailto:aquaponics]On Behalf Of Joy Pye-MacSwain
-> Sent: Wednesday, July 28, 1999 9:11 AM
-> Anyway your most recent response to Tom has sparked a couple of
-> questions.
->
-> > When we talk about feed to growth rate we are talking about feeding a
-> > complete pellet diet. I feed at 4% of body weight . While the
-> fish will eat
->
-> My fish are still only fingerlings, about 1.2 g and I am feeding
-> them at a rate
-> of about
-> 6% body weight per day (5 satiation feedings per day). I am
-> assuming that your
-> 4%
-> rate is for older fish?
->
Right now I am feeding breeders, but I also supplement with green foods like
watercress, water hyacinth, and string algae. The water hyacinth is free
choice so to speak , I replace it when it is gone.
-> >
-> I am planning on adding watercress to the facility, any advice
-> on how much
-> watercress that I should offer to the fish on any given day and
-> do I need to
-> wait
-> for them to reach a certain size before offering them the cress?
->
I offer as much cress as they will eat in two hours any more than this and
they seem to not want to eat the pellets as well. I would offer the cress as
soon as they reach 2 inches. Mine at that size went after it and ate it
without any problems. Smaller than two inches I feed supplemental string
algae. I noticed that if they fry were not that aggressive in feeding or
that their appetites slacked off by adding a feeding of algae it snapped
them back into a good feeding routine. Presently I feed 6 times a day 3
hours apart starting at 7 am
-> Also can anyone offer some advice on tomato plants? Mine were
-> doing fine
-> until I transplanted into pea gravel and after couple of weeks
-> I noticed brown
-> spots
-> in the lower leaves. I am assuming I have a magnesium
-> deficiency and plan on
-> spraying with a 2% solution of Epsom salts today ... however if
-> anyone has any
-> other suggestions I would love to hear them. Thanks.
->
-> Joy
->
Paula needs to jump in here as I believe she grows tomato's in her system
Ron
The One Who Walks Two Paths
ICQ 44271371
.------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
| Message 7 |
'------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
Subject: Re: SGVGA Meeting
From: "vpage"
Date: Wed, 28 Jul 1999 08:54:47 -0600
Please add me to your mail list.Thanks
VPage
.------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
| Message 8 |
'------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
Subject: Re: RE: Watercress
From: Bagelhole1
Date: Wed, 28 Jul 1999 12:30:49 EDT
In a message dated 7/28/99 3:40:48 PM, orchid@kellnet.com writes:
<>
Dear Ron,
This seems like a full time job with overtime, is this what one needs
to do to keep these fish growing? Isn't there any time saving or less time
consuming way? Tom O (bagelhole1)
.------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
| Message 9 |
'------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
Subject: RE: RE: Watercress
From: "Ronald W. Brooks"
Date: Wed, 28 Jul 1999 12:55:18 -0400
-> [mailto:aquaponics]On Behalf Of Bagelhole1
-> Sent: Wednesday, July 28, 1999 12:31 PM
->
->
->
-> Dear Ron,
-> This seems like a full time job with overtime, is this
-> what one needs
-> to do to keep these fish growing? Isn't there any time saving or
-> less time
-> consuming way? Tom O (bagelhole1)
Tom
There are plenty of time saving inventions out there including training the
fish to hit a rod or rope that hangs off of a demand type feeder. When the
bump it it drops feed. Or you can use a timed feeder , vibratory feeder ,
there all kinds of automated feeding equipment out there. Go to
http://www.aquaticeco.com for ideas and go ahead and contact them and order
there catalog.
Now the reasons I feed the way I do
I run several research tanks and measure the feed intake down to the gram.
So when I say that I am getting a feed to growth ratio of 1.4 or 1.3 to 1 I
have the data to back it up. Also I am working on the protocols for a
project involving Red Claw. There is not much literature out there on
polyculture of Red Claw with Tilapia other than a few that stated slower
growth rates when mixing. So I am designing one that should find out whether
it is the Red Claw being aggressive towards the fish of it is a factor of
the Red Claw itself.
First thing in the morning at 7 am I go and weigh out the feed for the whole
day. That done it takes about 5 minutes every three hours to feed and log
the data . I watch for a lot of factors during feeding and record it.
I also know how the fish feed and can catch any problems very early. And
discover the problem and correct it. I think for those that use automatic
feeders to take the time to observe their fish several times a day during
feeding so you know what is going on with the fish. If you only check the
fish every few days when you refill the feeders than you run the possibility
of coming in to fill the feeders to a tank full of dead or dying fish.
Hand feeding is cheaper in the start up equipment wise but does take time.
So most of you should not emulate my system which is primarily designed for
research, with the secondary benefit of providing me with fresh fish to eat.
Ron
The One Who Walks Two Paths
.------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
| Message 10 |
'------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
Subject: Re: SGVGA Meeting
From: atkindw@cwjamaica.com (david w atkinson)
Date: Wed, 28 Jul 1999 20:06:07 -0500
Yes, please put me on the email newsgroup list.
David (from Jamaica West Indies)
S&S Aqua Farm, 8386 County Road 8820, West Plains, MO 65775 417-256-5124
Web page http://www.townsqr.com/snsaqua/
|
