Hi, as Mely said, no coral dip will get you rid of the Tomonts. Hydrogen Peroxide is great (I dip all my frags in it before going to the tank) but it will mostly kill algae and unwanted (as well as wanted) hitchickers. All bristleworms, crabs, copepods will drop right off. But it will not kill Tomonts. Also do NOT dip in full strength Peroxide. You will need to dilute it. Justin Creadabel is the leading authority on H2O2 and if you are interested I can post a couple of slides with the correct concentrations for the different types of corals. You can usually go higher than what he suggests as these are safety guidelines, but prob a best idea is to start here. I have sprayed zoas out of the water with straight Peroxide with no ill effects.