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Re: NFC: Moina culturing (hogwash)
Sounds like a great idea, Dwight.
One question, though... what about the possible toxin buildups from teh
water? Especially true if you're culturing cyanobacteria -- the bacteria
produce some -very- toxic bits. Although daphnia won't eat these, it
could create quite a buildup if its not being removed by water changes...
just one example, and something to watch for.
However, you've created a rather inneffecient algal filter -- one of the
best filtration methods, IMO, available, and widely popular in the marine
environment. Its something I've been working on dong for my plant tanks -
although a bit more evolved than your method... Basically, I'd be hooking
up a5-10gallon tank to a slow siphon and pump... the water pours in, like
any kind of filter. However, unlike most, this would be in direct
sunlight, under as much light as possible and have a number of places for
greenwater to grow. The water would, of course, pas thru "standard"
filtration before and after.
J. L. Wiegert ICQ UIN: 1918889
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On Wed, 17 Mar 1999, Dwight Moody wrote:
> Date: Wed, 17 Mar 1999 13:11:33 PST
> From: Dwight Moody <dwightmoody at hotmail_com>
> Reply-To: nfc at actwin_com
> To: nfc at actwin_com
> Subject: Re: NFC: Moina culturing (hogwash)
> On a related note, I have instituted a rather neat recycling process in
> my fish room. When doing tank cleanings, I take some of the wastewater
> and put it in large one gallon jars, which are placed in a window to
> create green water cultures. The green water is a great food for tiny
> fry and works super as a food for daphnia.
> I take the green water, which is algae and protozoa grown from fish
> wastes, and feed the daphnia, which exhibit explosive growth and
> reproductionrates on green water cultures. The daphnia are then fed to
> the fish, closing the loop. Cuts down on the need for prepared foods
> and haven't had any incidents of disease transmission. Green water is
> added to the daphnia cultures as needed - when the daphnia clear the
> water, add some more and/or harvest some daphnia. Have kept my cultures
> going all winter by this method.
> >From: Sajjad Lateef <sajjad at uic_edu>
> >Reply-To: nfc at actwin_com
> >To: nfc at actwin_com
> >Subject: NFC: Moina culturing (hogwash)
> >Date: Wed, 17 Mar 1999 12:01:05 -0600 (CST)
> >MIME-Version: 1.0
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> > <grin> So, what do you think of the subject line?
> > Seriously, at the following URL:
> > http://www.science.nus.edu.sg/~webdbs/research/fish/index.html
> >can be found a few pages dealing with tropical fish and live food
> >culturing on a large-scale in Singapore. Of particular interest would
> >the page on culturing Moina and the use of pig-farm waste-water
> >Apparently, moina clean out the water enough for it to be suitable for
> >Sajjad Lateef
> >sajjad at acm_org Please Visit NFC:
> >"Tush! tush! fear boys with bugs"- Shakespeare "The Taming of the
> Shrew" 1:2
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