Aquaponics Digest - Fri 09/24/99
Message 1: Re: Recirc. Marine Systems
from "Sam Levy"
Message 2: Re: Recirc. Marine Systems
from "Sam Levy"
Message 3: Freshwater Clams?
from Jones Nick A PSNS
Message 4: Re: Freshwater Clams?
from mmiller@pcsia.com
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Subject: Re: Recirc. Marine Systems
From: "Sam Levy"
Date: Thu, 23 Sep 1999 22:05:43 PDT
mike-
i believe that most of the large exhibition set ups use artificial
seawater--which allows for ozone sterlization (a process not reccommended
for natural seawater).
what level of density & load were you expecting to achieve?
sam
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Subject: Re: Recirc. Marine Systems
From: "Sam Levy"
Date: Thu, 23 Sep 1999 22:12:31 PDT
kevin-
you're correct about nutrient concentration being a key--however using
effluent from intensive farming of marine finfish (or even shrimp) is
generally not nutrient poor. although there may well be a question of
nutrient balance. i'd like to hear more about your work--it seems to me
another key is growing a plant product that has some commercial value. i
can grow Enteromorpha or Ulva almost limitlessly, but don't know of any
major markets for the crop.
sam
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Subject: Freshwater Clams?
From: Jones Nick A PSNS
Date: Fri, 24 Sep 1999 13:43:17 -0700
When I went fishing in S. W. Oklahoma, over 30 yrs ago, I
remember a farm pond where there were fresh-water clams growing at one end
of the pond. At least that is what they appeared to be, although cattle
wading in/out of the water makes the term fresh-water debatable.
Does anyone know of fresh-water clams, or where a person
could get some (live)? I do not recall ever seeing any reference of/to them
but I doubt that the farmer brought the shells in from a sea-water
environment for fun or a joke.
thanks....nick
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Subject: Re: Freshwater Clams?
From: mmiller@pcsia.com
Date: Fri, 24 Sep 1999 16:56:52 -0500
Years ago along the Mississippi River between Iowa and Illinois and I am
sure elsewhere, there were button factories that used the shells of fresh
water clams as their raw material. I would go to your nearest healthy,
large river with your trusty potato fork and start digging of course
wearing good shoes and your PFD for safety. Another person who didn't,
just drown here this summer. I also remember seeing clam shells in large
farm ponds when I was younger. Mike Miller
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