Aquaponics Digest - Mon 12/27/99
Message 1: Re: Expanded clay
from "Mark Brotman"
Message 2: Re: controlled environment greenhouses
from "Mark Brotman"
Message 3: re: Tom's yellowing leaves
from "Mark Brotman"
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Subject: Re: Expanded clay
From: "Mark Brotman"
Date: Mon, 27 Dec 1999 13:34:31 -0500
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CropKing uses the expanded clay in the aquaponic beds with excellent
results. The pebbles are well rounded and have better capillary properties
than gravel due to the porous texture, thus delivering better flow to roots.
It is also lighter than gravel per unit of volume. Drawback is that it is
more expensive than gravel, and for aquaponics, the inert nature won't help
the plants micronutrients or buffer the pH at all. That all said, we prefer
it for it's mechanical advantages head and shoulders above other media.
Mark at CropKing
Raul Vergueiro Martins wrote:
> Vik Olliver wrote:
>
> > Raul Vergueiro Martins wrote:
> > > Anybody in the list had experience with expanded clay instead of pea
> > > gravel in the Speraneo System?
> >
> > I've used it as a support medium for NFT hydroponics and small agregate
> > tubs - I'm happy to share my findings with you if you like. I've not
> > used the Speraneo System though.
> >
> > Vik :v)
> > --
> > A member of The Olliver Family http://olliver.penguinpowered.com
>
> Hello Vick:
>
> Merry Christmas.
> Thanks to your answer.
> Would like to know your results about expanded clay in aquaponics.
> Looking in hearing from you briefly,
>
> Raul Vergueiro Martins
> rvm@sti.com.br
--
Mark J. Brotman
Aquaculturist
CropKing
5050 Greenwich Rd.
Seville, OH 44273
Tel: 330/769-2002, Fax: 330/769-2616
Email: mbrotman@cropking.com
On the web at http://www.cropking.com
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| Message 2 |
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Subject: Re: controlled environment greenhouses
From: "Mark Brotman"
Date: Mon, 27 Dec 1999 13:49:50 -0500
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Aloha Michael,
If you can visit the Common Heritage Foundation on the Big Island, they have a
number of projects that utilize cold sea water run through underground pipes to
chill roots. This produces grapes, peaches, carrots and many other edible plants
with higher sugar content than normal in what would otherwise be a black lava
desert. There are also offices and entire office buildings which are
environmentally controlled (cooled) by the cold sea water-in-pipes arranegement as
well. Some of the concepts are simple, like taking a used car radiator and a $10
box fan to cool down a trailer office or make a vegetable chiller. Anyway, if you
can make it over there, I'm sure you'll find it inspiring. They also have a web
site at http://www.aloha.com/~craven/ as part of the larger NELHA site,
http://www.bigisland.com/nelha/
Good luck and have fun! A hui hou,
Mark Brotman
Michael Haring wrote:
> hello, been a while since my last post so i apologize if i am treading up old
> ground. I'd like to find out information on using cold water for
> environmental control(growth tank, and greenhouse temp. control,
> atomizers, etc). I have a site in mind that offers cold water and warm
> water plumbed to the site. I would like to develop an environmentally
> controlled greenhouse using the water resource. If anyone here has some
> thoughts or experience in this, i'd love to hear about it
>
> Mahalo!
> O ke kahua mamua, mahope ke kukulu. Michael Haring
> 1020 Aoloa Pl.104a
> Kailua, HI 96734
> The site first, and then the building. (808) 263-9662
> haring@aloha.net
> haring@hawaii.edu
> -------------------------------------------------------------------------------
--
Mark J. Brotman
Aquaculturist
CropKing
5050 Greenwich Rd.
Seville, OH 44273
Tel: 330/769-2002, Fax: 330/769-2616
Email: mbrotman@cropking.com
On the web at http://www.cropking.com
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| Message 3 |
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Subject: re: Tom's yellowing leaves
From: "Mark Brotman"
Date: Mon, 27 Dec 1999 13:56:36 -0500
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Tom,
If you can, cut back on or gradually eliminate the hyacinth, since it takes up
nitrogen very aggressively-- it may be limiting access by the other, more edible,
plants to the nutrients. Have you had a leaf nutrient analysis done lately?
That can cut out all the guesswork and save loads of time and fretting.
Mark Brotman
Bagelhole1 wrote:
> In a message dated 12/25/99 4:59:35 PM, rvm@sti.com.br writes:
>
> < gravel in the Speraneo System?
> Would like detailed information about that.
> >>
>
> I'm using expanded clay balls to hold the roots in my vertical (2 liter
> plastic bottles) setup with 3 plants in each bottle, suspended in a series of
> bottles from the top of the greenhouse over the trenches. The fish water is
> pumped up into 1/2" tubing over the bottles where their are openings for the
> water to go thru the bottles and back into the water. After a few months its
> only working pretty good, the plants are a live but don't seem to grow much,
> I get some yellowing of leaves. I may need more nutrients in the water
> (eco-system). I have water hyacinthe and water peppermint, watercress,
> duckweed?, freshwater clams (alive and dead), ramshead snails, and 7 - 2lb
> catfish.
>
> Tom O
> http://bagelhole.org
--
Mark J. Brotman
Aquaculturist
CropKing
5050 Greenwich Rd.
Seville, OH 44273
Tel: 330/769-2002, Fax: 330/769-2616
Email: mbrotman@cropking.com
On the web at http://www.cropking.com
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