I've got some that i've had for years in a corner and never caused any issues....I recently read some stuff about them so figured i'd try getting rid of them, I hit them with aptasia X and it did nothing...
I think i'll try super gluing top next water change.
After you torch them, coat them like a powedered donut with fresh kalk. If you are quick and don't go crazy with the fire, most everything on the rock that you don't hit directly with the flame should survive. Wear goggles.
