I have a couple of colonies of palys that are on my live rock and I would like to be able to make a couple frags from them but I'm not sure how to do this without having to take the entire rock out of the water. They started as frags on a plug and now the polyps are surrounding the plug on the live rock. I don't want to cause too much stress on them. Does anyone have any ideas of how to do this with minimal stress? Any comments or suggestions would be great.