If you are not into DIY sump filters, then I would suggest purchasing an internal filter..........And then adding a canister filter......THe Fluval series has an excellant internal filter line that ranges from $40-just above $100........Mixing this with a RENA XP3 canister filter will be perfect......The Xp3 is like the ols school FLUVAL canister filters, but cost a little less.........I have used the Fluval brand since the late 80's, I stand by the name..........But after owning a RENA Xp3, I would say RENA wins the cup if you do not have the extra $20-40........