LOL... so here's a side note.... I am actually looking for ways to grow green water more densely because I have 8 vats of Daphnia and Moina to feed and with Winter coming I am culturing the GW in the garage. If you have a lot of GW then get a starter culture of daphnia and siphon off a gallon of GW for them every day then start using a net with fairly wide holes to harvest the larger ones and stick'm in your tank... your fish will love you. Right now I need about 20G of dense GW daily to keep the daphnia cultures greenish....