i dont think it has enough light for any type of coral, but it will support a lot. i am pretty sure that you could do most softies and gorgonians, many LPS (brain, hammer, etc), and only very specific clams (derasa), SPS, and anemones (rose BTA?). of course, all of these corals have other requirements beyond lighting that may disqualify them. what specifically are you looking to add? spend the time to research specific corals that you might like.