You kind of need a CUC(crabs and snails), well not so many crabs, but you definetly need some snails.
It's called the circle of life. Eveything eats, everything poops. Get used to it.
There is a reason we siphon the sandbed when doing water changes, one is to get rid of poop.
You want to see pooping machines? My chitons poop every couple minutes. My starry blenny poops so much it killed one of my plate corals(likes to use it as his personal toilet).