Yeah. He was on a supporting base rock. Kept hitting him with aptasia x. Got him good a few times. But it would just shrink him. Then he grew back. Hit him with boiling water. Nothing. Finally got fed up and broke out the large coral cutters. Luckily the rock was not extremly hard and he had moved to a point in it. So out he came! :-D pretty sure he didn't multiply. Only about a half inch at his biggest. But ill watch.