Aquaponics Digest - Sun 09/02/01
Message 1: Re: Solviva Greenhouse type setup
from "Christopher S Weller"
Message 2: Re: Solviva Greenhouse type setup
from "gerry magnuson"
Message 3: What's This? A Thermoacoustic Engine?
from "TGTX"
Message 4: Re: What's This? A Thermoacoustic Engine?
from pantryman 'at' empireone.net
Message 5: Re: Specific Gravity of Algae - inclined plate settler
from pantryman 'at' empireone.net
Message 6: Re: inclined plate separators
from pantryman 'at' empireone.net
Message 7: Algal Density- Incline Plate Settlers
from "TGTX"
Message 8: Re: inclined plate separators
from dreadlox
Message 9: Re: Specific Gravity of Algae - inclined plate settler
from "Thomas Short"
Message 10: Re: Algal Density- Incline Plate Settlers
from "TGTX"
Message 11: Re: costs and competition and quality
from Arlus Farnsworth
Message 12: Re: inclined plate separators
from pantryman 'at' empireone.net
Message 13: inclined plate clarifiers
from dreadlox
Message 14: Re: inclined plate clarifiers
from "Arlos"
Message 15: Re: What's This? A Thermoacoustic Engine?
from Arlus Farnsworth
Message 16: Re: What's This? A Thermoacoustic Engine?
from Arlus Farnsworth
Message 17: boiler heat
from "Steven Medlock"
Message 18: Re: Bed of Coals, Better "Combustion"
from Carolyn Hoagland
Message 19: Re: boiler heat
from "Arlos"
| Message 1
Subject: Re: Solviva Greenhouse type setup
From: "Christopher S Weller"
Date: Sat, 1 Sep 2001 18:44:56 -0400
I would like to thank all of you who responded to my questions
Now I have even more research to (I Love research [really])
| Message 2
Subject: Re: Solviva Greenhouse type setup
From: "gerry magnuson"
Date: Sun, 02 Sep 2001 04:31:58 -1000
remember, mistakes are just another way of doing something
.when you have
found it, hope your finger doesn't stink.
>From: "Christopher S Weller"
>Reply-To: aquaponics 'at' townsqr.com
>
>Subject: Re: Solviva Greenhouse type setup
>Date: Sat, 1 Sep 2001 18:44:56 -0400
>
>I would like to thank all of you who responded to my questions
>Now I have even more research to (I Love research [really])
>
| Message 3
Subject: What's This? A Thermoacoustic Engine?
From: "TGTX"
Date: Sun, 2 Sep 2001 09:34:15 -0500
>An inclined plate settler coupled with a foam fractionator has worked well
for us.>Some pics can be found at our page: www.oneaccordfoodpantry.org
>Bob
The copper colored baseball bat at the "What's This" webpage looks like a
version of the much tauted helium gas thermoacoustic engine, or perhaps some
kind of sterling engine design. Looks like a beauty. What's up, Bob?
| Message 4
Subject: Re: What's This? A Thermoacoustic Engine?
From: pantryman 'at' empireone.net
Date: Sun, 2 Sep 2001 09:56:46 -0500
"TGTX" wrote:
>
> >An inclined plate settler coupled with a foam fractionator has worked well
> for us.> >Some pics can be found at our page: www.oneaccordfoodpantry.org
> >Bob
>
> The copper colored baseball bat at the "What's This" webpage looks like a
> version of the much tauted helium gas thermoacoustic engine, or perhaps some
> kind of sterling engine design. Looks like a beauty. What's up, Bob?
Hello
Actually, my father was the first human to see 'synchrotron radiation' discharging from
an operating synchrotron in 1947. To see reference to his observation go to
http://www.desy.de/pr-info/desyhome/html/presse/hginfos/hasylab/geschichte.en.html
The experiment in 1947 was testing a new technique to inject a stream of electrons
into an accelerator (the accelerator or 'glass doughnut' was about 6-8' in circumference
and was powered by 70,000,000 volts).
To commemorate his observation, GE gave him the heart of the experiment - the actual
injector itself. This unit is all that remains of that experiment (by contrast, the accelerator
on the page listed above is about 900' in circumference).
I posted it there to honor him, since we did not see eye-to-eye on many things.
I also felt the discovery should not simply slip into oblivion.Bob
>
>
>
| Message 5
Subject: Re: Specific Gravity of Algae - inclined plate settler
From: pantryman 'at' empireone.net
Date: Sun, 2 Sep 2001 10:03:14 -0500
Gosh Mick, you really stopped me cold with your kind words
. wow
Thank you
Bob
Mick wrote:
>
>
>
> pantryman 'at' empireone.net wrote:
>
> > An inclined plate settler coupled with a foam fractionator has worked well for us.> > Some pics can be found at our page: www.oneaccordfoodpantry.org
> > Bob
> >
>
> --
>
> Bob,
>
> I read your site. You are an angel in human form. What a useful way to spend one's
> lifetime, feeding the hungry and teaching them how to grow their own food. I wish I
> lived closer so I could come and see your operation.
>
> If I ever win the dang lottery, you folks get a huge chunk of it. Heroes
gotta love
> 'em.
>
> Mick
>
>
>
| Message 6
Subject: Re: inclined plate separators
From: pantryman 'at' empireone.net
Date: Sun, 2 Sep 2001 10:13:19 -0500
Hi Carolyn.A very simple separator can be easily made from (2) 8' 2x8's, (1) 8' 2x6, a 4x8 sheet of
marine plywood (3/4"), some epoxy paint, silicone caulk, a knife gate and a bulkhead drain
If you are interested, I can post instructions here.
We carried a fairly dense population of fish in a 2,000 gallon round tank and the unit had to
be
cleaned daily, but it really worked quite well
. got lots of nasty stuff for the garden.Bob
Carolyn Hoagland wrote:
>
> Hi Ted,
> I did a google search and found this good diagram.
> http://www.parkson.com/NEWPROD_gewe_inclined_plate_clarifier.htm
> I couldn't quite see where the gunk outlet is. I assume someplace
> near the bottom?
>
> Carolyn
>
>
| Message 7
Subject: Algal Density- Incline Plate Settlers
From: "TGTX"
Date: Sun, 2 Sep 2001 10:20:35 -0500
Sorry folks, Mike in Jamaica was closer to right about neutral bouyancy of
algae.
Here is a citation I found:
"Algal Biovolume and Biomass
Algal biomass can be estimated from quantitative counts by combining species
count data with published estimates of cell or colony volume for each
species. Species cell counts multiplied by their respective mean cell
volumes and summed over all species gives phytoplankton "biovolume." This
may be converted to wet weight biomass by assuming a specific gravity for
algae of 1.03 g mL-1. When rough estimates are acceptable, we can even go on
to convert estimated wet weight to dry weight by a factor of 0.12, or to
organic carbon by a factor of 0.06."
So, algae specific gravity is only slightly less dense than water, by about
3%, not 15 or 20%. Did I say 1.15 to 1.20 g/cc? I think that density
recovered from this wet noodle of mine is for wet fish feed or fish
feces
.reference Chen et. al about 1995?? Somebody help me out here.
Anyway, so, inclined plate settlers
. Yes, Carolyn, the solids settle in
the bottom and the sludge "blanket" can be pumped out or drained out of the
bottom depending on the design. The deeper the basin the better, but the
depth can run into practical limits that must be considered.
I have a stack of engineering papers on inclined plate settlers, which
discuss the optimum angle of "inclination", number of plates, etc. But it
doesn't have to be uh, excuse the term, rocket science, sorry Mr.
B.P
that expression is coined with the utmost respect for rocket
scientists around the world and from time immemorial
or way back when, or
a real long time ago, or to not have a mind is a terrible waste of fuel, or
whatever I am saying.
Just making this up here
A four foot wide, eight foot long, 3 or 4 foot
deep settler with, oh, 2 dozen or so inclined plates made of fiberglas or
plastic set at about, oh, 58 to 60 degrees should do you proud like Crisco
Shortenin'. Leave about, oh, 2 inches clearance of the plates above the
bottom of the settler tank. Again, I just made that up
.I didn't run it
through a left brain algorithm
this is a right brain brush stroke on rice
papyrus
or, a random gaseous emission from the wet noodle bowl
with
me?
I'll just go away now for a while and rest some.
Later
Ted-roid.
| Message 8
Subject: Re: inclined plate separators
From: dreadlox
Date: Sun, 02 Sep 2001 10:41:31 -0700
Very inspiring work Bob!!
I used to work with a group in England during my University years there
doing pretty much the same thing, visiting prisons, and prison farms
etc. It brought back a lot of good memories. Keep it up!
I would be interested in the directions for the inclined plate
seperator.
Pics can be posted to me for the groups benefit at my address. I will
post them to http://Aquaponics.20megsfree.com/ !
Thanks
><{{{*> Mike Barnett <*}}}><
JAMAICA, West Indies
pantryman 'at' empireone.net wrote:
>
> Hi Carolyn.> A very simple separator can be easily made from (2) 8' 2x8's, (1) 8' 2x6, a 4x8 sheet of
> marine plywood (3/4"), some epoxy paint, silicone caulk, a knife gate and a bulkhead drain
> If you are interested, I can post instructions here.
> We carried a fairly dense population of fish in a 2,000 gallon round tank and the unit had to
be
> cleaned daily, but it really worked quite well
. got lots of nasty stuff for the garden.> Bob
>
> Carolyn Hoagland wrote:
> >
> > Hi Ted,
> > I did a google search and found this good diagram.
> > http://www.parkson.com/NEWPROD_gewe_inclined_plate_clarifier.htm
> > I couldn't quite see where the gunk outlet is. I assume someplace
> > near the bottom?
> >
> > Carolyn
> >
> >
--
| Message 9
Subject: Re: Specific Gravity of Algae - inclined plate settler
From: "Thomas Short"
Date: Sun, 2 Sep 2001 09:05:35 -0700
=_NextPart_001_0000_01C1338E.6D1BDE00
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
There is NO pics of your inclined plate settler on the site you reefer To=
o! =20
=20
----- Original Message -----
From: pantryman 'at' empireone.net
Sent: Sunday, September 02, 2001 1:59 AM
To: aquaponics 'at' townsqr.com
Subject: Re: Specific Gravity of Algae - inclined plate settler
=20
An inclined plate settler coupled with a foam fractionator has worked wel=
l for us.Some pics can be found at our page: www.oneaccordfoodpantry.org
Bob
"TGTX" wrote:
>
> Carolyn and Company,
>
> The degree of intracellular gas vacuole development and lipid content r=
atio
> changes in cyanobacteria (blue green algae) is an adaptation or phyloge=
netic
> plasticity design characteristic that can result in the blue greens
> floating, ie, they become less dense in bulk volume than the density of
> water which is about 1 gram per cubic centimeter at ambient temps.
>
> The other algae, however, can be settled or centrifuged out because I t=
hink
> they are at about 1.15 to 1.20 g/cc
.but don't quote me cause that i=
s
> just a SWAG that I seem to remember from some old tattered notebook
=
> Bear in mind that many flagellated species of microscopic unicellular g=
reen
> algae (Chlorophycophyta) can swim against gravity and pressure gradient=
s or
> currents to a degree.
>
> Ever thought of inclined plate settlers?
>
> Ted
>
>Get more from the Web. FREE MSN Explorer download : http://explorer.msn=
.com
=_NextPart_001_0000_01C1338E.6D1BDE00
Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
There is NO pi=
cs of your inclined plate settler on the site you reefer Too! =
----- Original Message ----- From:<=
/B> pantryman 'at' empireone.net Sent=
: Sunday, September 02, 2001 1:59 AM To: aquaponics 'at' townsqr.com Subject: Re: Specific Gravity of Algae - inclined plate settl=
er
An inclined plate settler coupled with a fo=
am fractionator has worked well for us
.
Some pics can be found at ou=
r page: www.oneaccordfoodpantry.org
Bob
"TGTX" <=
> wrote:
>
> Carolyn and Company,
>=
;
> The degree of intracellular gas vacuole development and lipid c=
ontent ratio
> changes in cyanobacteria (blue green algae) is an ad=
aptation or phylogenetic
> plasticity design characteristic that ca=
n result in the blue greens
> floating, ie, they become less dense =
in bulk volume than the density of
> water which is about 1 gram pe=
r cubic centimeter at ambient temps.
>
> The other algae, how=
ever, can be settled or centrifuged out because I think
> they are =
at about 1.15 to 1.20 g/cc
.but don't quote me cause that is
> j=
ust a SWAG that I seem to remember from some old tattered notebook
<=
BR>> Bear in mind that many flagellated species of microscopic unicell=
ular green
> algae (Chlorophycophyta) can swim against gravity and =
pressure gradients or
> currents to a degree.
>
> Ever =
thought of inclined plate settlers?
>
> Ted
>
>
Get more from the Web. =
FREE MSN Explorer download : http://e=
xplorer.msn.com
=_NextPart_001_0000_01C1338E.6D1BDE00--
| Message 10
Subject: Re: Algal Density- Incline Plate Settlers
From: "TGTX"
Date: Sun, 2 Sep 2001 11:19:38 -0500
>
> So, algae specific gravity is only slightly less dense than water, by
about
> 3%, not 15 or 20%
I meant to say slightly more dense than water. More denser, like me, here
lately.
| Message 11
Subject: Re: costs and competition and quality
From: Arlus Farnsworth
Date: Sun, 02 Sep 2001 09:57:54 -0700
uhh
. how much time you have left in the day after all the chores are
done?
Christopher S Weller wrote:
>
> Arlus Farnsworth wrote
> "This is going to sound flippant, there should be a freedom index for
> incoming products. The cheaper the labor the more we leverage against
> slavery."
>
> My question is what is a freedom Index?
>
> Chris Weller
>
| Message 12
Subject: Re: inclined plate separators
From: pantryman 'at' empireone.net
Date: Sun, 2 Sep 2001 13:01:23 -0500
Hi Mike.Thank you for the good words.Here are the directions for the separator
.I can also describe a simple air lift to remove
feces
from the tank if you wish (using 4" pvc)
.we used it with this separator.Bob
Instructions for separator
1)- Cut a 36” x 48” piece from the 3/4” sheet of marine plywood (needs to be good one
side)
this will be
the full final dimension of the separator.
2)- Cut (2) pieces of 2x8 exactly 48”. Nail edges to length of cut plywood piece, just
flush with the
outermost edge of the plywood.
3)- Measure inside to inside bottom of the two pieces of 2x8. Cut (2) more pieces to this
dimension, and nail
the pieces in place
. you now have a box with a plywood bottom.4)- Measure back 5” from each end (inside of 2x8) and mark in several places
.draw a line with
a
straightedge
. this will be the inside dimesions of the inlet and outlet troughs.
5)- Cut (2) pieces of 2x6 to the dimensions in 4 above. On one of the pieces, measure down
3/4” and draw a
line the length of the piece. Cut a 1” cleat the same length as the piece of 2x6 and nail in
place beneath the
mark so that when the piece of 2x6 is stood on its edge, the top of the cleat is 3/4” down from
the top of the
2x6. The cleat will support the top edge of the inclined plane.
6)- Square and nail this completed piece in place along the line in 4 above with the cleat to
the inside of the
box and keeping a 5” trough behind it. Then nail the opposing piece in place along its
corresponding line
keeping a 5” trough behind it. Nail the sides also.
7)- Now the tricky part
.using a t-square for sheetrock, measure from the bottom of the
uncleated 2x6 to the
top inside of the cleat on the other 2x6
.measure side to side also
measurements want to be
tight. Cut
another piece of plywood to these dimensions (this is the inclined plane). Sand off the
better side and
remove any burrs from the edges
.drop into place and secure with a few finishing nails (no
worries, the
paint will hold it in place too - stuff is like glue).
8)- Facing from the side, cut a hole in the right hand trough to accomodate the bulkhead
fitting snugly
.this
is the return for clarified water.
9)- Check to see that all unions are securely nailed in place.
10)- Paint the entire unit with marine epoxy paint
.battleship grey shows up dirty surfaces
well
.give it
several coats paying particular attention to end cuts of wood.
11)- Next after thorough drying, caulk all inside unions with marine silicone caulk in
particular the top,
bottom and sides of the inclined plane.
12)- After thorough curing of caulk, install bulkhead fitting through hole in end
.unit is now
ready to use.
dreadlox wrote:
>
> Very inspiring work Bob!!
>
> I used to work with a group in England during my University years there
> doing pretty much the same thing, visiting prisons, and prison farms
> etc. It brought back a lot of good memories. Keep it up!
>
> I would be interested in the directions for the inclined plate
> seperator.
>
> Pics can be posted to me for the groups benefit at my address. I will
> post them to http://Aquaponics.20megsfree.com/ !
>
> Thanks
>
> ><{{{*> Mike Barnett <*}}}><
> JAMAICA, West Indies
>
>
>
> pantryman 'at' empireone.net wrote:
> >
> > Hi Carolyn.> > A very simple separator can be easily made from (2) 8' 2x8's, (1) 8' 2x6, a 4x8 sheet of
> > marine plywood (3/4"), some epoxy paint, silicone caulk, a knife gate and a bulkhead
drain
> > If you are interested, I can post instructions here.
> > We carried a fairly dense population of fish in a 2,000 gallon round tank and the unit had
to be
> > cleaned daily, but it really worked quite well
. got lots of nasty stuff for the garden.> > Bob
> >
> > Carolyn Hoagland wrote:
> > >
> > > Hi Ted,
> > > I did a google search and found this good diagram.
> > > http://www.parkson.com/NEWPROD_gewe_inclined_plate_clarifier.htm
> > > I couldn't quite see where the gunk outlet is. I assume someplace
> > > near the bottom?
> > >
> > > Carolyn
> > >
> > >
>
> --
>
>
| Message 13
Subject: inclined plate clarifiers
From: dreadlox
Date: Sun, 02 Sep 2001 13:20:49 -0700
Here you see a clearer view of an inclined plate clarifier diagram with
thickener function.
http://www.leiblein.de/english/baffle.htm
The rig Ted described is without the square cone shown at the bottom in
this pic.
--
><{{{*> Mike Barnett <*}}}><
JAMAICA, West Indies
| Message 14
Subject: Re: inclined plate clarifiers
From: "Arlos"
Date: Sun, 2 Sep 2001 12:34:25 -0700
Mike,
Nice compact design. I wouldn't attempt to build this out of wood for an
aquaponics application but at the very least, carbon steel. FRP or PVC sheet
and scale it according to flow and load demand. Discharge rates would have
to be determined by sampling but most likely daily would be part of O&M. I
would install a dual diaphragm pump and send the solid waste to a
composting cabinet and adjust for internal temp around 165 deg F. Any liquid
could be drawn off and sent back to the system to break down in the
biofilter.I suppose I'm going to finally have to put my two cents in and
submit drawings to your site for posting for fabricating one. Not everyone
here welds or has access to equipment beyond simple hand tools. Working at
Ft. Ord, CA about 3+ years ago we had to scavenge sheet metal to build
hoppers for material processing and found our selves building from filing
cabinets and road signs culled from the base. We even pulled a 24" diameter
pipe from under a closed road on base for fabrication of what I called the
headless logger ride to riffle bullets, residue sand and floating organics
from a processing stream. That was only temporary, so anyone building a
clarifier should build it from material that isn't going to have to be
recoated or relined once a year. There are several coatings on the market
that should be good for a decade of service if applied properly whether
bituminous (asphalt), poly acrylic(Metacrylics) or good old fashion two part
epoxy on steel. I would imagine there are also a number of us in here
including you Mike, that could fabricate and ship a finished clarifier, hint
hint
A good lid and either a spray bar or access with a hose from above is
going to be mandatory for service, a flanged port for foam fractionizer
should be design too as an adjustable weir for flow should be part of the
design. Even the Biofilter could be freight trained onto the array as part
of a packaged skid with monitoring and sampling ports added for future
system expansion to make this one stop shopping. (Mike, hint hint
again)
To: aquaponics 'at' townsqr.com
Date: Sunday, September 02, 2001 11:12 AM
Subject: inclined plate clarifiers
>Here you see a clearer view of an inclined plate clarifier diagram with
>thickener function.
>
>http://www.leiblein.de/english/baffle.htm
>
>The rig Ted described is without the square cone shown at the bottom in
>this pic.
>--
>
> ><{{{*> Mike Barnett <*}}}><
> JAMAICA, West Indies
>
| Message 15
Subject: Re: What's This? A Thermoacoustic Engine?
From: Arlus Farnsworth
Date: Sun, 02 Sep 2001 14:28:43 -0700
ultrasonic air compressor with no moving parts?
TGTX wrote:
>
> >An inclined plate settler coupled with a foam fractionator has worked well
> for us.> >Some pics can be found at our page: www.oneaccordfoodpantry.org
> >Bob
>
> The copper colored baseball bat at the "What's This" webpage looks like a
> version of the much tauted helium gas thermoacoustic engine, or perhaps some
> kind of sterling engine design. Looks like a beauty. What's up, Bob?
| Message 16
Subject: Re: What's This? A Thermoacoustic Engine?
From: Arlus Farnsworth
Date: Sun, 02 Sep 2001 14:32:36 -0700
If I'm not mistaken, another invention requires electon injection to
achieve fusion in plasma.
"fusor"
pantryman 'at' empireone.net wrote:
>
> "TGTX" wrote:
> >
> > >An inclined plate settler coupled with a foam fractionator has worked well
> > for us.> > >Some pics can be found at our page: www.oneaccordfoodpantry.org
> > >Bob
> >
> > The copper colored baseball bat at the "What's This" webpage looks like a
> > version of the much tauted helium gas thermoacoustic engine, or perhaps some
> > kind of sterling engine design. Looks like a beauty. What's up, Bob?
>
> Hello
> Actually, my father was the first human to see 'synchrotron radiation' discharging from
> an operating synchrotron in 1947. To see reference to his observation go to
> http://www.desy.de/pr-info/desyhome/html/presse/hginfos/hasylab/geschichte.en.html
> The experiment in 1947 was testing a new technique to inject a stream of electrons
> into an accelerator (the accelerator or 'glass doughnut' was about 6-8' in circumference
> and was powered by 70,000,000 volts).
> To commemorate his observation, GE gave him the heart of the experiment - the actual
> injector itself. This unit is all that remains of that experiment (by contrast, the
accelerator
> on the page listed above is about 900' in circumference).
> I posted it there to honor him, since we did not see eye-to-eye on many things.
> I also felt the discovery should not simply slip into oblivion.> Bob
> >
> >
> >
| Message 17
Subject: boiler heat
From: "Steven Medlock"
Date: Sun, 2 Sep 2001 17:12:00 -0500
I have just purchased a gas boiler system used. It also came with six large
iron registers, I am going to also set this up to run the hot water through
a coil of copper in my fish growing tank. In theory heating the water and
the growing beds causing a radiant heat source. It is 130,000btu I will
back it up with wood heat if needed. The furnace is only 5 years old and
supposed to be 90 percent efficient. I couldn't pass it up for $700.
Red
| Message 18
Subject: Re: Bed of Coals, Better "Combustion"
From: Carolyn Hoagland
Date: Sun, 02 Sep 2001 20:42:56 -0500
Ted,
I really enjoyed this book about learning to make our industrial
process mimic the slower processes of bio-organisms.
http://www.amazon.com/exec/obidos/ASIN/0688160999/qid=999481211/sr=1-1/ref=sc_b_1/002-9983182-6971251
Carolyn
| Message 19
Subject: Re: boiler heat
From: "Arlos"
Date: Sun, 2 Sep 2001 19:02:00 -0700
Steven,
Get a heat exchanger (Aquatic- Eco Systems in Fl is a good source,
expensive but good systems. and don't emerse the copper directly in the fish
tank. Copper can poison your plants and your fish. A fish can handle a
limited amount of immersion in a copper solution to rid the gills of
parasites
Depending on your system size 130K can be over or undersized.
The efficiency is in regards to fuel burn and not system efficiency. a
quick and dirty off the top of my head would be, if you had a 35,000 gallon
system and a 450K BTU heater, your heat rise would be roughly 13 deg F per
hour. Depending on heat sinks and exposed surface area, matching a heater to
system is not difficult but remember what we say here on the West Coast,
"exactly how much does a free boat cost" Appliances are like cars, no one
sells a perfectly good car. the most common reason you can buy an
inexpensive system like you have is the heat exchanger cracked and can not
be repaired. Carbon monoxide is a huge problem especially if the system is
indoors.
Check your boiler sump. Every 1/2" of sediment can raise your fuel costs
by 75%. Use an electronic descaler to keep calcite from precipitating on the
exchange tubes and plan a blow down on a regular basis. Don't dump anti
scaling chemicals into your boiler they may end up in your aquaponics
systems.
I'd hate to see you loose an expensive investment.
Arlos
-----Original Message-----
From: Steven Medlock
To: aquaponics 'at' townsqr.com
Date: Sunday, September 02, 2001 3:06 PM
Subject: boiler heat
>I have just purchased a gas boiler system used. It also came with six
large
>iron registers, I am going to also set this up to run the hot water through
>a coil of copper in my fish growing tank. In theory heating the water and
>the growing beds causing a radiant heat source. It is 130,000btu I will
>back it up with wood heat if needed. The furnace is only 5 years old and
>supposed to be 90 percent efficient. I couldn't pass it up for $700.
>Red
>
>
|
