HOBs Aquatop 40 UV filter, 2 Aqueon 50 and Bak Pac II Protein skimmer. About 50 lbs of live rock and some branch live rock. I have a Sailfin Tang, 2 Clowns, 1 Coral Beauty, 1 Fire Fish and 1 Canary Bleny. That's about it, kind of excessive filtering but I never have water problems. I use one of...