I am going to build a 8'x4'x3' aquarium. Although I have much experience with a 220 gallon tank, I don't know where to begin filtering a tank of this size. On my 220 gallon I used 2 Emperor bio-wheel power filters and 1 magnum 350 bio-wheel canister filters and had complete satisfaction. Would 4 magnum 350 bio-wheel canisters and a pump just for circulating the water be enough. I have no experience with a sump system but it looks to me like a mess if there would be a power outage. Any advise would be great.