My 55 Gallon Aquarium runs off a Penguin bio wheel 200 with dual filter cartdrige placement, a heater made for 30/60 gallon aquariums, Whisper Power Filter with bio pad made for 2/10 gallon aqauriums, 2 24" hood an light fixtures with 15 watt bulbs, in the tank I have 4 Convict Cichlids, 2...