Removing Feather Caulerpa Suggestions

[undertai]

I need help in removing some feather Caulerpa. It came attached to a frag I got and has grown out of control. For the last 6 months. It is starting to bother a millie & A. Soli that is near by.


I have tried:
1.) pulling it out, but some is left in holes in the rock and grows back.
2.) a sea hare, my LTA eat it!
3.) and a lawnmower blenny it didn't touch the stuff.


I can't take the rock out as it is large with about 4 colonies and a couple frags on it.

ANY SUGGESTIONS

 

[Brandon's Reef]

The only way I would think to demolish the algea would be to take it out and cook it?