Cant get Phosphates down

[WindowMaker]

red sheet on the bottom. I think that is cyano...

[Douglas]

Do you have sand? and option is to remove it. Go bare bottom. I've never had an issue, with Phosphates, with a bare bottom tank. But that's just my opinion.

[sphelps]

Originally Posted by WindowMaker

red sheet on the bottom. I think that is cyano...

yeap that's cyano, it's actually more like bacteria than algae so cutting phosphates back will have little effect. The best way to deal with it is by removing as much by hand as possible and then using a red slime treatment such as chemiclean.