Ok so I have these tiny starfish that I know for a fact are eating my zoes I have seen them directly eating them. My worst colony is a tubbs blue colony that is on the sand bed. Problem is I dont know how to kill these buggers I have a ton of rock work and I grab all the ones I can off the glass and rocks but cant seem to get them under control. Any suggestions, I was wondering if a harlequin shrimp might do the trick or would they not be interested in such a small star. Also I freshwater dip my new zoes I get will this help me get rid of any newcoming stars. Thanks in advance