Every day I pull out 15 of these little pests! It is never ending. Any suggestions on how to remove them permanently? I keep fish, Corals, Clams, one Tuxedo urchin, one large Banded Brittle Starfish, assorted hermits, snails, and a couple of shrimp. My tank is a 72 bow front with 100 Lbs. of live rock. Any help would be greatly appreciated.