Blue is perfectly right, for the filteration I have a emperor 400 and a magnum 350 canister filter. Its on a reef tank put can be used for both. The magnum 350 is the better of the 2, if you keep the canister and tubes clean it will keep your tank crystal clear. The good thing about it is if you use the fiber filter for it you never have to buy a new one when it gets dirty you simply mix 3 parts water to 1 part bleach. Let that soak 24 hours, and spray it clean with a hose and it perfectly good. If you don't feel safe using it after you spray it off, just let it dry over night.