Aquaponics Digest - Thu 05/20/99
Message 1: Re: Seeding
from joyeuse@netcom.ca (Joy Pye-Macswain)
Message 2: Media, was Re: Seeding
from S & S Aqua Farm
Message 3: Re: Algae
from Jon Hays
Message 4: perlite
from james.rakocy@uvi.edu (James Rakocy, Ph.D.)
Message 5: Re: straw & Algae
from "Jorg D. Ostrowski"
Message 6: Re: straw & Algae
from mark stephens
Message 7: Re: straw & Algae
from Jon Hays
Message 8: perlite
from LC543119
Message 9: Re: perlite
from james.rakocy@uvi.edu (James Rakocy, Ph.D.)
Message 10: Re: Seeding
from Adriana Gutierrez & Dennis LaGatta
Message 11: Re: Seeding
from Adriana Gutierrez & Dennis LaGatta
Message 12: Re: Media, was Re: Seeding
from Adriana Gutierrez & Dennis LaGatta
Message 13: Slugs and snails
from strawbs@mweb.co.za
Message 14: Re: Slugs and snails
from Adriana Gutierrez & Dennis LaGatta
Message 15: Re: Seeding
from KLOTTTRUE
Message 16: Re: Slugs and snails
from William Evans
Message 17: Re: Algae
from Mike Miller
Message 18: Re: Seeding
from Adriana Gutierrez & Dennis LaGatta
Message 19: Re: Seeding
from MUDDTOO
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Subject: Re: Seeding
From: joyeuse@netcom.ca (Joy Pye-Macswain)
Date: Thu, 20 May 1999 08:52:46 -0400 (EDT)
Morning Adrianna
>
>One of our extension offices here in Florida just completeed research
>using various media alone and in combination with others and concluded
>that perlite is as good as the others and more economical. Why mess
>with success?
Thanks for th einformation..:) :) :) Has this info been published yet?? And
if so where???
>What are you growing? Are using trays, troughs, tubes or some other
>system?
Starting out with tomatoes and expanding into lettuce, herbs and other things
as we gain more experience. We are planning on using a trough system.
Joy
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Subject: Media, was Re: Seeding
From: S & S Aqua Farm
Date: Thu, 20 May 1999 08:31:19 -0500
At 01:04 PM 5/19/99 -0400, Adriana wrote:
>Hi Joy,
>
>One of our extension offices here in Florida just completeed research
>using various media alone and in combination with others and concluded
>that perlite is as good as the others and more economical. Why mess
>with success?
I was wondering about this comparison - what type of system was used? Are
we talking traditional hydroponics here, or are they conducting aquaponics
research?
Are you adding an aquaponics system into your operation this year Adriana?
Paula
S&S Aqua Farm, 8386 County Road 8820, West Plains, MO 65775 417-256-5124
Web page http://www.townsqr.com/snsaqua/
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Subject: Re: Algae
From: Jon Hays
Date: Thu, 20 May 1999 07:47:01 -0600
I have 4 tanks with aquatic plants and had a heavy algae bloom and used
straw to correct this and it worked fine. I asked at the feed store for
barley straw and they did not know if it was barley or wheat straw but it
worked in any case.
Take care
John Hays
At 11:06 AM 5/19/99 , you wrote:
>Organic Gardening reported last month that straw is a good algaecide.
>They put the straw in net bags and floated it in ponds.
>
>Adriana
>
>
>> >Hi , Everyone I am still having severe Algae build up in my fish
>> >tank,tried covering the tank, no luck, I want to know if there is
>> >something I can put in the water to kill the algae and not harm my fish
>> >and plants growing in my growing beds.
>
John Hays
1903 Pebble Hill Rd.
Carlsbad, NM 88220
1-505-887-0102
ICQ# 765699
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Subject: perlite
From: james.rakocy@uvi.edu (James Rakocy, Ph.D.)
Date: Thu, 20 May 1999 09:51:22 -0400 (AST)
Is anyone using perlite as the sole biofiltration media (in addition to
using it as hydroponic media) in an aquaponic system. Does it support large
amounts of fish? Does it clog? Does it tend to gel (stick together) through
the growth of microorganism (biofilm)? Must solids be removed through a
separate process before culture water is used to irrigate the perlite? Jim R.
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Subject: Re: straw & Algae
From: "Jorg D. Ostrowski"
Date: Thu, 20 May 1999 07:55:19 -0600 (MDT)
You said:"I have 4 tanks with aquatic plants and had a heavy algae bloom
and used straw to correct this and it worked fine. I asked at the feed
store for barley straw and they did not know if it was barley or wheat
straw but it worked in any case."
-----------------------------------------------------------------------
Jon or anyone: How does this work? Does the straw metabolise the algae?
Does this also apply to microscopic algae? Jorg ostrowski
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Subject: Re: straw & Algae
From: mark stephens
Date: Thu, 20 May 1999 10:22:21 -0400
Unless it works overnite, it could promote the growth of protozoans which
eat the algae. That might take about a week or more to take effect. I'm
just basing this on cultures I made with straw in my youth.
mark
>You said:"I have 4 tanks with aquatic plants and had a heavy algae bloom
>and used straw to correct this and it worked fine. I asked at the feed
>store for barley straw and they did not know if it was barley or wheat
>straw but it worked in any case."
>-----------------------------------------------------------------------
>Jon or anyone: How does this work? Does the straw metabolise the algae?
>Does this also apply to microscopic algae? Jorg ostrowski
_____________________________________________________________________________
mark stephens Integrated Financial Management Project
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Subject: Re: straw & Algae
From: Jon Hays
Date: Thu, 20 May 1999 10:08:21 -0600
Jorg: I don"t know what makes it work , but I read on the net I think at
(Aquatic-Plants@actwin.com ) and they said that it caused a build up of
hummer acid and this I take it that algae don't like it. I still have algae
on the sides of my tanks but they are 18" deep and I can see the bottom
where as I could not see 2" deep before. They said it would take about 2
weeks for this to work, but mine took only a week. You can sign on to this
group and search their archives.
Take care
John Hays
At 07:55 AM 5/20/99 , you wrote:
>
>You said:"I have 4 tanks with aquatic plants and had a heavy algae bloom
>and used straw to correct this and it worked fine. I asked at the feed
>store for barley straw and they did not know if it was barley or wheat
>straw but it worked in any case."
>-----------------------------------------------------------------------
>Jon or anyone: How does this work? Does the straw metabolise the algae?
>Does this also apply to microscopic algae? Jorg ostrowski
>
John Hays
1903 Pebble Hill Rd.
Carlsbad, NM 88220
1-505-887-0102
ICQ# 765699
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Subject: perlite
From: LC543119
Date: Thu, 20 May 1999 12:06:18 EDT
Jim, I am presently involved in three projects useing perlite as a
biological filter I I have three other consultants working with me on
these multmillion dollar projects if you want you can keep in touch and I
will keep you posted on the progress by the way two of these projects are
raising sturgeon for caviar production. I dont have much time to review the
list as I am travelling most of the time good to talk to you again
Gordon Creaser
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Subject: Re: perlite
From: james.rakocy@uvi.edu (James Rakocy, Ph.D.)
Date: Thu, 20 May 1999 12:59:44 -0400 (AST)
Are these projects in the construction stage (hence, a consultant is needed)
or are they in a stage where they have been operating successfully for a
long duration (hence, they are sustainable)? Jim R.
>Jim, I am presently involved in three projects useing perlite as a
>biological filter I I have three other consultants working with me on
>these multmillion dollar projects if you want you can keep in touch and I
>will keep you posted on the progress by the way two of these projects are
>raising sturgeon for caviar production. I dont have much time to review the
>list as I am travelling most of the time good to talk to you again
> Gordon Creaser
>
>
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Subject: Re: Seeding
From: Adriana Gutierrez & Dennis LaGatta
Date: Thu, 20 May 1999 13:40:11 -0400
Craig,
My system is what is often referred to as a Gordon Creaser system. I
call it a perlite-drip system. I have perlite in 3" deep aluminum (with
baked enamel finish) trays. The trays are 12" wide and can be made as
long as you want, up to 30 feet in some applications. Mine are 14 feet
long. The trays are sloped 1" every 12 feet and there is dripper on the
high end of the tray. The dripper is on continuously. The low end has
a drain which returns the nutrient back to my tank.
I'm operating my system hydroponically, not aquaponically but I wouldn't
expect any bacteria problems with this type of system. The perlite
offers massive surface area for the beneficial baceria to grow.
I believe some of Gordon's clients are using perlite in combination with
aquaculture. Gordon, are you lurking?
Adriana
> Hello Adrana
> About your perlite system- I'm guessing you are using Ebb & Flow?
> Also What is your cycling times. Perlite sounds much easier to work with.
> Any problems with keeping bactiria health?
>
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Subject: Re: Seeding
From: Adriana Gutierrez & Dennis LaGatta
Date: Thu, 20 May 1999 13:48:22 -0400
Joy,
I saw a brief reference to this research in one of their publications.
I got more information directly from the guy doing the research. If
you'd like to talk to him he is Bob Hochmuth at (904) 362-1725. His
e-mail is lio@gnv.ifas.ufl.edu (Phone contact is better for him because
I believe he has a handicap that does not allow him to use a keyboard).
Adriana
>
> Thanks for th einformation..:) :) :) Has this info been published yet?? And
> if so where???
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Subject: Re: Media, was Re: Seeding
From: Adriana Gutierrez & Dennis LaGatta
Date: Thu, 20 May 1999 13:54:20 -0400
Paula,
That extension office does primarily hydroponic systems, no aquaponics.
I know they tested the towers but also did bag culture.
>
> I was wondering about this comparison - what type of system was used? Are
> we talking traditional hydroponics here, or are they conducting aquaponics
> research?
For now I won't be adding aquaponics Paula. The prospect of managing
and marketing a second product at my scale (Mom-and-Pop without the Pop,
and part-time at that) is daunting. Not to mention that I know I have
to find a new location within the next 6-12 months and will need to
accomodate a 100% increase in volume to meet the needs of my existing
customers once "the season" starts up again in November. What I would
love to do is piggyback my greens onto somebody else's fish operation.
There are a couple of possibilities for doing that.
> Are you adding an aquaponics system into your operation this year Adriana?
Adriana
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Subject: Slugs and snails
From: strawbs@mweb.co.za
Date: Thu, 20 May 1999 21:29:41 +0200
Hi Folks,
Does anybody have advise on how to get rid of slugs and snails in =
strawberries?
The pellets does not last long enough and forms a residue in the gravel =
beds....
Chris
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Subject: Re: Slugs and snails
From: Adriana Gutierrez & Dennis LaGatta
Date: Thu, 20 May 1999 16:27:49 -0400
Have you tried beer for the slugs? Use an upside-down jar lid and fill
it with beer. The slugs are attracted to it and either drown or it
makes them sick and they die. I don't know about the snails.
Adriana
> Does anybody have advise on how to get rid of slugs and snails in
> strawberries?
> The pellets does not last long enough and forms a residue in the
> gravel beds....
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Subject: Re: Seeding
From: KLOTTTRUE
Date: Thu, 20 May 1999 17:28:52 EDT
In a message dated 5/20/99 2:38:31 PM Eastern Daylight Time,
gutierrez-lagatta@home.com writes:
<< I have perlite in 3" deep aluminum (with
baked enamel finish) trays. The trays are 12" wide and can be made >>
Hi Adriana,how do you keep the perlite from floating away? Ken
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Subject: Re: Slugs and snails
From: William Evans
Date: Thu, 20 May 1999 16:14:57 -0700
handpick them at night when they're about(this is war!), drop into
bucket hot soapy water, o they crawl.... then mulch w/ cocoa mulch
(cocoa bean hulls) They hate it..Do the beer traps too as well, they
work.
billevans
> strawbs@mweb.co.za wrote:
>
> Hi Folks,
> Does anybody have advise on how to get rid of slugs and snails in
> strawberries?
> The pellets does not last long enough and forms a residue in the
> gravel beds....
> Chris
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Subject: Re: Algae
From: Mike Miller
Date: Thu, 20 May 1999 19:37:20 -0500
I wonder if there is more than meets the eye on barley straw being an
algaecide at least in the chemical sense. While it very well may be true,
I wonder if the decomposing straw is not promoting the growth of lifeforms
that feed on the algae and this might explain why wheat straw also works?
I once visited a state fish hatchery and they had manure/straw in wire
container in the fish ponds. The guide said that it promoted the growth of
organisms that were food for the small bass fry. Just a thought. Mike Miller
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Subject: Re: Seeding
From: Adriana Gutierrez & Dennis LaGatta
Date: Thu, 20 May 1999 21:16:29 -0400
Ken,
Since it's not an ebb and flow system the perlite is never in enough
liquid to float. I do have screens in the drain pipes to keep it from
draining out or plugging the drains. The slow drip ensures a constant,
even moisture throughout the perlite.
Adriana
KLOTTTRUE wrote:
>
> In a message dated 5/20/99 2:38:31 PM Eastern Daylight Time,
> gutierrez-lagatta@home.com writes:
>
> << I have perlite in 3" deep aluminum (with
> baked enamel finish) trays. The trays are 12" wide and can be made >>
> Hi Adriana,how do you keep the perlite from floating away? Ken
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Subject: Re: Seeding
From: MUDDTOO
Date: Fri, 21 May 1999 00:15:02 EDT
Hello Ken and Adriana,
I run 100% perlite in a flood and drain setup and fill to within 1/2 inch of
the top without floating. The trick is to keep the fill rate down and not to
overfill the container w/ nurtrient. I'm also using it in drip setups in
bags with great results. At my house the plant growth in a constant drip
setup, using the same nutrient, exceed the plants in a timed flood and drain
setup by about 3 or 4 to 1.
Joel
In a message dated 99-05-20 21:18:52 EDT, you write:
<< Ken,
Since it's not an ebb and flow system the perlite is never in enough
liquid to float. I do have screens in the drain pipes to keep it from
draining out or plugging the drains. The slow drip ensures a constant,
even moisture throughout the perlite.
Adriana
KLOTTTRUE wrote:
>
> In a message dated 5/20/99 2:38:31 PM Eastern Daylight Time,
> gutierrez-lagatta@home.com writes:
>
> << I have perlite in 3" deep aluminum (with
> baked enamel finish) trays. The trays are 12" wide and can be made >>
> Hi Adriana,how do you keep the perlite from floating away? Ken >>
S&S Aqua Farm, 8386 County Road 8820, West Plains, MO 65775 417-256-5124
Web page http://www.townsqr.com/snsaqua/
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