My tank is a 55 gallon its not a traditional 55 gallon its much wider the demensions are length 40 inches height 20 inches width 17 inches i want to put an oscar and a parrot chichlid and 2 electric blue acarain it i do water changes every week my filter is a canister it does 264 gallons an hour im buying all the fish as junivelles and upgrading the tank in 2 years