Hmmm...... So if I were to culture this green water how would one go about doing it and would a filter just clean it out? I think this can be done indoors I just need to figure out how. I have a 2 to 2 1/2 acre pond within 75 feet that I could pump water from if needed to get the good water , but that kinda defeats the purpose of having a heated room so the water would stay warm. Do they need a cold spell like some fish and then warm again to get the breeding started or can they breed year round if the temps are right? Even if I pumped in the water I dont know how much plankton would be in it for the larvae. I typically get a ton of FA on the surface in masses and what I believe to be Chara growing around the shallows. It get's so thick in the heat of the summer it's not even fun to fish because your always dragging in weeds. Anyways thanks for the responses.