Am having a epidemic of immature starfish im my 55 gal zoanthid and palythoa tank. They are ganging up and eating my zoas. Have tried adding more crabs
its kinda fun watching them, they are all about buissness. they can iradicate the little buggers in no time. but like brandon said they are so efficient you have to be ready to feed them something else when all the stars are gone. or pull them out and sell them to the next reefer who has stars.