I have beed doing a lot of reading and research as to the pro's and con's of HOB and canister filters. I am going to be setting up my 55 gallon tank soon. I was leaning towards getting a canister but it seems like the common issue/complaint with canister filters is they can become clogged which can inhibit the flow of water, etc. I have 2 dogs, one of which is a white german shepherd. Her hair gets EVERYWHERE!! Yes, there is a lid to the tank but hair can still manage to get in there. How big of an issue is clogging with canister filters? At this point I think I am leaning towards getting 2 HOB filters. What are thoughts on the various brands? Aqua Clear VS. Marineland(Emperor/350, etc.)?