Has anyone observed Xenia's stinging and injuring other corals that they were touching? I had a nice size purple Monti cap and some Xenia started growing on a rock next to it; eventually some of the Xenia were touching one edge along 1" or so of the Monti, but I paid no attention to it. The next thing I know, there's a white (dead) patch on the Monti about 2" x 2" right next to where the Xenia were touching that Monti's edge. And within a week or two, the whole Monti is now about dead (almost all white). Anyone seen this or heard of this before? Thanks