Bad and surprisingly far!
Honestly, I'm at my witt's end with my elegance. I keep shoving it further and further under an overhang in my tank, and it just keeps growing and growing. I have lost a clam to it (kamikazied off a ledge into the elegance). It literally burned holes through the mantle.
It's melted some acans and a favia as well. It even sticks to my arm if I accidently brush up against it when working in the tank. Usually leaves little welts afterwards. There are some days I'm convinced it's not an elegance at all, but a carpet anemone!