Apparently I have one about the size of a Silver Dollar in my tank. I've been wondering why all my small Ceriths, Nassarius and Nerites keep disappearing. I caught a brief glimpse of him one night while looking at my tank after lights out. Would it be best to frag and dip all my corals, fish and inverts to a temp holding tank (10 gallon) and start with new sand and dry rock. I don't think traps work very well and I'm not able to stay up all night long to try and net it. And I'm afraid to try and use Flatworm Exit and nuke everything when/if it dies.

