I'd say my clean up crew is decent, roughly 5 turbos, 30 hermits, a few nassarius and cerith snails and a tiger goby that keeps the sand moving aroun . I have 2 koralia 3's keeping the flow goin. 6 month old Buckeye ro/di unit. I think my next step may be quite a few more nassarius snails or a phosban reactor but i dont know alot about the reactors so ive got a little research to do.