Rob, if I end up having them in the tank, I cannot remove any of the colonies. They're well attached to the rock
I've got frags before and tried to turkey baste the flatworms off with little success, so I'm hoping that the few that came on this frag were equally well attached. It's possible that one let go and is in the tank somewhere, but I'm hoping I don't get them breeding in there over this.
The kicker is I know so much better than to add a frag to the tank without checking and dipping. Just dumb..