My understanding of what everyone has said (fairly new to this myself) is that when you do your filter maintenance, which should be done soon. You should remove all the media (Bioballs, filter pads) as these add more problems than they their worth. Run the canister empty (or with Carbon) if you need the circulation, if not don't even bother using it. The sump is going to do the job of the canister, with the skimmer housed inside is your filter pads. The live rock is your bioballs (sorry bad analogy).
Sell the Fluval and go buy more fish with the bounty
