I have had my tank since February. I have a circulation pump. My filter is a Marineland Penguin filter that came with the aquarium kit. Water is from LFS
, pure. Water temp is set at 82 degrees. My chromis lived from March to September. Cleaner shrimp seems fine. I have lost the one chromis and the pepermint shrimp (lived about a month), the emerald crab and a starfish lived several days. I have found their bodies in the tank. They were being munched on. Tank now contains two damsels, one cardinal, one clown, one chromis and one dotty..all are small, about 3/4 to an inch. Also have a cleaner shrimp and several hermit crabs.