Algae Id help and discussion

[littlebeard]

Been neglecting my refugium for a bit, mostly because I'm focused on the display and I run a grow light which just makes everything pink.

Bought some Gracilaria, and it looks like this hitchhiker below has taken over.
Can I get an ID on it? What is it? and should I remove it(will it take over the display?)

 

[littlebeard]

Another picture in it's environment. Strangling out the Gracilaria.

 

[littlebeard]

After doing some research, I think i have Caulerpa brachypus. An invasive algae banned in many states. Some people have had luck with rabbit fish eating this stuff... I fed some to my tang who is in qt to see if he has an appetite for it. Answer is no on that one. I'll be pulling it out of my refugium slowly as to not spread it.