I have a 110g freshwater set up with about 40 small mixed mbuna Cichlids. Right now I have a Fluval 405 and two Whisper hang on the back filters, old ones, I think they are Whisper 5. I keep hearing about sumps, is this an option for my tank? I just want a clean tank, but three filters on one tank seems like a lot. Thanks. P.S. I am new to this site and I really like it!