I currently have a 50 gal tank, 4" DSB, 60# live rock, CPR Bakpak skimmer, hang-on refugium, about 170 watts of PC lighting (fairly new bulbs), 3 clowns, 2 4-stripe damsel, 2 pj cardinals, 1 orange spot goby, shrimp, snails, hermits, mushrooms and a few other soft corals. Temp=76, pH=8.2...