My 90gal FOWLR has somehow got this weird problem with brown algea. I'm not sure whats causing it because I only have one fish in it. My angel isn't affected by it but it drives me nuts looking at it. Whats the culprit and why did it hit me? Not that I've never had problems but it seems to me that I'm not over loaded on fish. I know one thing I need to pay a lot more attention to my tank. :headshake2: