Hello, i plan i starting up a 55gal SW FOWLR tank. I currently have @ 50lbs of live rock cured and ready to go, i also have @ 40-50lbs of live rock that came out of another tank a few months ago, was kept in SW, but only at room temp, @ 65 degrees so im sure it died off. I was going to hook up a canister filter to aid in the filtration along with a 3-4 inch live sand bed, but after reading some of the posts in here it sounds like going with a canister filter may not be the best choice, and i should only hook up a few power heads to push the water. I plan on putting "heartier" fish in the tank, no corals, and nothing too senstive. Given what i want to do with the tank, what would be the opinions of others on how best to set this tank up? Thanks.