I was lookin a a clump of zoo's that I've got in my tank that were closed today. There was this little guy that looks like a catapillar on em. What could this be? I wish I had a camera to take a picture but I don't. With me moving the tank on either wed or thursday that'd be the best time to treat all the corals i'm guessing as I'll be bagging each of them and then acclimating them all to the new tank. HELP!!!