I suppose it's a matter of what your dipping for. Inteceptor works for red bugs but not much else. Lugols is alright i guess if you have bacterial problems but it can kill the coral before it gets the red bugs. I have no idea what kills montipora flatworms, I suspect starvation is the only sure fire way there
I only dip if I suspect a problem and quarantining is important if you want to spot problems before it reaches the main tank
