Aquaponics Digest - Sat 05/20/00 




Message   1: Re: shipping greens
             from Carolyn Hoagland 

Message   2: Re:a swamp in the near future
             from Carolyn Hoagland 

Message   3: Re: sulfuric / muratic acids
             from John Hays 

Message   4: Re: pH control
             from John Hays 

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| Message 1                                                           |
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Subject: Re: shipping greens
From:    Carolyn Hoagland 
Date:    Sat, 20 May 2000 07:35:23 -0500

I know that floral producers have developed
plastic packages that have a CO2 absorber in
them.  They claim they can keep the tougher
flowers (like carnations) "fresh" in the cooler
for months...

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| Message 2                                                           |
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Subject: Re:a swamp in the near future
From:    Carolyn Hoagland 
Date:    Sat, 20 May 2000 07:41:36 -0500

MARC LABERGE wrote:

You can aerate your pond and this will take care
of the O2 but if you don't have a high renewal
rate you will slowly be euthrophying your pond and
may have a swamp in the near future.
Does your comment above assume a high stocking
rate and supplemental feed?

Seems like a properly managed farm pond works
indefinitely?   Is the critical factor the
stocking rate?  At some low stocking rate, the
frogs, water weeds, fish, algae, protozoa, and
ducks seems to settle into a sustainable  pattern?

Carolyn

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| Message 3                                                           |
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Subject: Re: sulfuric / muratic acids
From:    John Hays 
Date:    Sat, 20 May 2000 16:11:22 -0600

"Claude Gelinas agr." wrote:

> .Claude I would love to have a copy of your chart.

Thanks
John Hays

>
>
> I have a chart that tell you how much acid to add to break alkalinity in water.
> it can deal with most acid on the market. if it could help you i can post it on
> the list.
>
>
>   Claude Gélinas Agr., D.T.A.
>   PHYTO Ressources
> ========================================================================
>  Varennes, Québec, Canada       Tél: (450) 652 9764 Fax : (450) 652 6182
>   Des questions sur les insectes et maladies des plantes ornementales ?
>             Want to know more about ornamental plant pest ?
>                       http://www.phyto.qc.ca
>

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| Message 4                                                           |
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Subject: Re: pH control
From:    John Hays 
Date:    Sat, 20 May 2000 16:21:29 -0600

LABERGE MARC wrote:
Try  throwing some barley straw into the pond and let nature take its course.
The barley straw is mostley carbon and it will brake down and form humeric acid
or humic acid. Or you are in Canada so you could use spragnam peat moss.
John Hays

> << I read a chart that shows un-ionized ammonia is directly related to temp.
> and pH. Well, there is nothing I can do about the temp. The pH of the pond
> was 9.5 +/-. I am trying to get the pH down to apprx. 7.0. I have been
> adding muriatic  acid. I have added 10 gal so far and the pH is down to 8.5.
> >>
>
> Steve , an important factor you did not mention is your water exchange rate
> ( pond renewal time ) , if your renewal is a couple of days , wouldn't  you
> constantly be fighting your pH ?
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