Ok, I'm searched and searched and I can not for the life of me find what I'm looking for. I'm in the process of building an acrylic tank that works out to about 89 gallons. I need to know what size of an overflow I should run. This tank will be freshwater so I'd like to avoid a sump and just run a nice canister. I've seen it done, nice, clean, neat. Dimensions will be 48 x 16 x 27(length, width, height). What size should the overflow be? Preferably center, but 1 corner if that'd work better. Thanks, MYTMOWZ