a friend of mine gave me the permission to take one of her red mushroom home. All her mushrooms attached real good on the rock. I used a wooden toothpick and tried to pry it off the rock. I ended up pocking the tearing the base of the shroom, and now it's dying in my tank. People said shrooms can still live even you cut them half, but in my case, I just messed the base of the shroom up a lil, but it's dying, I dunno why, that is weird. So I think the blowing them with a powerhead works best. If that's the only shroom you have, don't cut it or you might end up losing it.