Is there any such thing as too much filtration?? Because I have been thinking of getting another filter for my 29 gallon. I have some algea issues because of the stuff in there. 3 cichlids which are 4" a piece, a tiger barb, a catfish, 2 sucker fish..plus the decorations. I have a Whisper 30-60 model power filter. I was thinking about getting a Diatom filter to help out. You's think it wouldn't really be too much filtration? Any opinions would really help, thanx.