Ok, so all I have ever fragged is Leather Corals and Xenia. I am needing to frag some Zoas and Montipora Caps. What's the best way to frag these corals? The Zoas are on rocks that are attached to my PVC frame, which I can't remove from the tank. I have a fresh exacto knife, that we bought to frag our Xenia forest. Any and all help is appreciated. I don't want to mess up and cause a large Palytoxin death camp in my tank.