My tank is pretty young. I have a protein skimmer, 100lbs of live rock and a Fluval 404 canister connected to my 90gal. I've basically been living on reef forum web sites for the last three months and I see a lot of recommendations not to use mechanical filters because they're nitrate factories. My fluval has sponge/biomax/nitrate sponge/phos-ban. Should I disconnect it and just put in another powerhead to make up for circulation? How do those of you without mechanical filters deal with the tiny debris and particles that get kicked up from time to time? Just wait for it to settle? My protein skimmer has a compartment for media (carbon) if needed, so leaving the canister running empty so that I can add media won't get put to good use very often. Ideas? Thoughts on the debris question?