I recently have come across (just starting research on aquarium stuff) two different filters that I have kind of narrowed it down to for my next aquarium. One is the Marineland Bio-wheel Emperor filter types, I've been reading up on them and they seem to be very highly recommended. However, I've also seen a new Tetratec type filter that you can actually put the heater INTO and it claims to have a biological (don't they all) filtration method, but it doesn't say anything about a wet/dry system that I could see on the box. So that gets me semi-concerned. Is one superior to the other? I like the heater in the filter idea for sure. . .if it works and doesn't hurt my future fish. Anyone have experience with these filters? Thanks so much.