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NFC: re: dapnia
> It is generally a bad idea to add much circulation to a daphnia
> tank... the bubbles interfere with the little critters and in some
> cases attach themselves to the daphnias body and they cant escape the
> surface. I have used a sponge filter with an air source so slow and
> reduced the bubbles so you could see only one bubble rising at a
> time... this tends to keep the daphnia out of the turbulence caused by
> the bubbles. In any case its a really bad idea to use an airstone.
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