Well then that's good to hear, thank you!!! Sponges . . . my new topic to research.
Think my tank is pretty healthy, parameters good and fish all doing well. Now if I can only find the culprit that is annoying my zoas. They are suddenly withering away. THinking it's that 14" bristle worm I've been trying to catch; I don't mind the little ones but this monster has to go or maybe it's all those damn vermatid snails !!!