Canister filter on RSM?

[Baker]

I use a canister because when I bought my tank I had no idea what I was doing. I have had my 55gal running on a fluval 406 and I have only taken it out once in 3 1/2 months that its been running. I just took trays out, cleaned foam and left old fluval media in there. There was alot of junk in there. I used old tank water to clean the foam and rinse out canister. This tank is starting to really clean up. That being said, if my cabinet would fit a sump then I would go to sump.