Hi - I have a 120 gallon (4x2x2) tank with >100 lbs live rock, 25 gallon sump/fuge, Euroreef 6-2+ skimmer. The current fish are 1 purple tang 3", 2 coral beauties 3"&2", 1 maroon clown 3" and 5 blue/green chromis 1-2". I also have: 1 RBTA, 3 giant clams, trumpet coral, blastomussa, cynarina...