Other than we know it is brown algae and there should not be any reason.. no. It first appeared when I removed two plants. Then it went completely out of hand when I removed the nasty sponge filter and replaced it with the little ceramic bio things that go in the filter. Thinking that would be a better bacteria home than the grody sponge. Well, that did not do too well huh? The tank has been lights out and covered hoping that would kill the algae, well, it killed the ghost shrimp. Actually, he committed suicide. I found him outside the tank and on the counter. Considering the water level was an inch below the top of the tank and there was no way out other than taking a leap. I am stumped. I tried scrubbing the stuff off, it does remove easily but in a day or two it comes back. This last time it came back with a vengeance and literally covered the tops of the decos something fierce. I tried cutting back the amount of time the light was on but it did not seem to care hence my reason to go dark side of the moon on it.
I have to do something quick though because Polo pitching that fit on me is not helping his situation at all.