It's been running for 4 yrs I have 10 green chromis , 3 yellow tail damsels , 1 Fijian fox face , 1 bi color goat fish , 1 watchmen goby , 1 mandrin goby , 2 clown fish a brittle star a pencil urchin a bunch of hermit crabs and a assortment of snails feather dusters sponges I have frog spawn coral , torch coral , toadstool leather , brain coral , trumpet coral , flower pot , elephant mushrooms a big green mushroom unsure of the name some green Mat type coral started growing on its own not sure the name of it either a purple clam a couple gargonias and probably forgetting a few things but ya lots of things living in my 200 gal reef.