I have a yellow tang, starry blenny, skunk shrimp, serpent star, sand conch, 4 turbos, 20 hermits, 2 emerald crabs, 15 nerite snails, 15 astrea snails, and 20 cereith snails, a tuxedo urchin, and a long spine urchin. I still have to clean my glass everyday. I do 20% water changes weekly.