I have a 90 gallon African cichlid tank. Currently running with an aquaclear 110 and emperor 400 filter. The emperor I think is on its last leg, really noisy and sounds like its struggling. Someone was getting rid of a fluval 305 canister so I snatched it up. I know it's only rated for 70 gallons, but if I run it and the aquaclear do you think I'll have enough filtration? Or, should I get rid of the 305 and keep my eyes open for a bigger canister? Moneys tight so I can just run out and drop 200 bucks