Well...it probably wouldn't be considered a frag, so I apologize if this is in the wrong forum, but I think it kinda applies here because it could just as easily be a frag as opposed to a smaller piece of live rock. Without further ado...I bought a rock with about 5 polyps of blue mushrooms on them and I would love it if they eventually spread off the rock and onto my bigger rocks in the display. Because of the way the rock was cut, it is kinda unsightly, kinda like a brick with 1.5 inch tall sheer faces on all sides. This makes me not really want to glue it onto my live rock in the display, so I have it kinda buried in the sand next to a large piece of rock. Will it eventually spread off or is the fact that it's in the sand inhibiting its growth? In general is it a good idea to glue rocks that you buy with corals on them to existing pieces of rock? I was a bit worried what would happen if some coral spread off the rock you had bought it on, and onto new rock and then the original piece fell off...probably injuring or tearing the coral. I guess when individual polyps spread it wouldn't be much of a problem because the two could exist apart, but if you had something that was interconnected and the colony got torn in half by a base rock falling off it could be pretty bad, right? What are everyone's thoughts on whether to glue or not glue?