You can look at my profile. I have a 55g with a 29g sump. I use an overflow, with a rio 17-20hf return pump, titanium heater with a seperate thermostat, Excaliber skimmer, three maxijet 1200 ph's, 2-175w hamilton pendants with 10k bulbs, four 4" 12v fans on a timer keeping the canopy cool, misc. timers, surge protectors, ground faults, pumps for mixing sw, pumps for adding freshwater, filter pads, omg it just keeps going. I have about 60lbs of sand, and about 100lbs of live rock.