You wanna know what works better than any canister filter in the world?
First you need a sump. A sump could simply be a little 10-15 gal
glass tank or rubbermaid tub. Make your own filter socks. You get full flow, better filtration, absolutely NO
back pressure, and the simplest of maintenance. My wife has a sewing machine so I've got it made. You just buy some sheet felt from your local fabric store, sew it up any way you want and POW the cheapest filter in the world. Throw it away after a while if you want, but I just turn it inside out, spray it clean, and reuse it. Every once in a while I throw a couple of them in the wash. Don't use any detergent with reef tanks. I guarantee its cheaper than any other filter as well.
I have been round and round with different types of filtration. I started with those stupid hang on biowheel penguin things, they suck and I have no faith in those stupid bio wheels anyway. Think about this...If you rely on these bio wheels to keep your fish healthy and alive ... you've got bigger problems than biological filtration.
This is the cheapest canister filter known to man, works better than a Magnum and the cheapest replacement filter elements in the world.
Right now its in my basement in a box because canisters are too high maintenance for my taste. I've been there and done the canisters. They are out of sight and out of mind. You don't want to know what happens when you forget about a canister filter for a while...stinky, nasty, putrid, and deadly. They can be a nitrate factory to say the least.
I now use my filter socks and not a single problem. Worst case scenario, you forget about the sock and it overflows. This is not a problem since it sits in your sump anyway.