If the LFS xenia is attached to small rocks, just place the whole thing in your tank. If the mushrrom is attached to a rock, yes you can cut it off at the base and move it. Several ways to reattach it to a new area. The way I like to do it: cut it off, place it in the sand where it won't get blown away for a week or so. It will attach to the sand. Take it out and using super glue gel, attach it to it's new home. You will have to take out the new home, dab it dry, dab the mushroom dry with a paper towel, and then glue it. Cover it with a damp papertowel for a couple of minutes and then you can replace it into the tank.