OK, the stuff is now going wild in my main tank and spreading like wildfire. Pulling it out has almost become a non option and it's begining to cover rocks and corals. I had to break off one of my acros from one rock and just throw that rock into my fuge along with all the pom pom xenia that had detached from the rock and attached to the caulerpa.

Any proven method to get it out of my main tank other than removing all rock and replacing with new. Attempted an Achiles tang that doesn't seem to have the taste for it.