so how would I go about culturing zooplankton? and where would I get a starting culture?
Florida Aqua Farms (recommended) or
Aquatic Eco Systems (also recomended, but more $$)...
you can also get bottles of "Phyto2" or whatever its called from Premium Aquatics....
Culturing: YouTube is your friend.....
....beyond that, here are some of my tips (I'm no expert, but I've done it before)
1) make sure whatever you do: mitigate cross contamination: don't place rotifers ANYWHERE near your phyto (or above it)...clean airlines in bleach, blah blah blah
2) you can culture phyto (and roti's) in white 5gal buckets with plain ole 26W CF bulbs above it, 1.017-1.019 SG ASW and some F2 (recommended) or Miracle Grow (works, but...)
or you can get a decent production from 2L bottle and point blank light
3) personally I feed my rotifers mostly some yellow powder stuff from AES ....FAF sells Roti-rich (probably same crap) ...i also fed them some of the phyto I was culturing (nano mostly)
4) I used air....opinions vary, but I don't see how you can get by w/o it