I've had african cichlids for over 15yrs and have kept 125 & 150 gallon aquariums. On those tanks I've always used canister filters. I've recently acquired a 320 gallon acrylic aquarium and I'm looking at setting up a wet dry filtration system for it. How big of a filtration system do I need for such a large tank? I've never used a wet dry filter but I'm thinking it would be best for this large of a tank. This is going to be a Malawi & Victorian community tank.