And it is an inexpensive solution too! Thanks. On Jan 9, 2010, at 12:51 PM, Scott Frayo wrote: > > Turn off all of your lights. Cover the tank for 3-5 days (depending on the > severity of outbreak) with something that does not allow in ANY light. Leave > it alone. Do not uncover to check on it. Do not bother to feed the fish, > they'll be fine for that period of time. After 3-5 days, uncover and it > should be fine. It works great on my 150g when I have a bad outbreak. I > never add anything to the water for treating Cyanobacteria. Hope this helps. > -----Scott > _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member