As you can see, while I started with one, those have multiplied into 6 over 18 months. I need to dislodge at least 4 of them, ideally all of them so I can just keep one. They are stinging all the corals around them. Rock work weights 100+ pounds, cannot move it. Here you see me blasting 2 of them with a powerhead. They have shrunk up but seem to be enjoying it.
Any other ideas?
Any other ideas?