I have a 55 Gal. tank with 65 lbs. LR, Two Clowns, 1 Coral Beauty, 1 Naso Tang (small) and a clean up crew, I have a Fluval canaster filter, and a "Bio" wheel type filter that hangs on the back, and a UGF with two power heads. The tank has been up and running for almost a year with no major...