What you have is a very good system for getting top quality live food for your fish on tap. I keep a tank of green water and another full of live Daphnia. I feed the daphnia with the green water and then feed most of the Daphnia to my Rainbow fish. As the daphnia stock depletes then the water gets green again and so on goes the continuous cycle. cheers Neil From the" Land Down Under" icq 13931687