Just different ways to cook an egg. I don't either, no filter sock, no sponge on the return pump, etc. Everything goes down to the skimmer for removal, and what doesn't get removed there, gets send back up (or to the refugium) for removal by pods, worms, corals, etc. Sure eventually I might have to clean out the sump from detritus, but the trade-off is that I never have to worry about about creating some trap in the tank, and I feel there is stronger pod populations (just an opinion, not verified).