My biggest tank is 360 gallons, not sure if it counts though cause it isn't running atm ( remodelng the living room, then going to set it up) going to have a wet/dry 3 drawer system( going to use course sponges in first drawer, filter socks in the second, fine grain sponges in final drawer) and 3-75 gallon totes modified to act as sumps ( 2 of the totes filled with roughly 400+ pot scrubbies , final tote filled with poly fill and will hold my heaters and 2 -1500 Gph pumps , might going with bigger pumps so I will have at least a 10 x turnover rate... well this is what my game plan is so far ....