[pmason44m]

Anything? I've got some in my DT and it always comes back after I pick every last bit out (clearly missing the roots)... anyone have an idea.

[Dr. Clyde]

I don't like that stuff cause it grows like a weed & sticks to LR & is hard to clean up but when I did have it in my Refugium I would toss it into the TD when it got out of hand & the tangs would eat it up.

[Mr_X]

what kind of caulerpa are you talking about? how about a picture if you don't have an i.d.

[pmason44m]

I think it's: Caulerpa prolifera or Caulerpa brachypus
but I really don't know... its got serrated edges

Let me know what you think?

[Mr_X]

ah..i believe that's commonly referred to as razor caulerpa.
i haven't heard of anything that eats it.
you could give a sea hare, or long spined urchin a shot, but what i would do is get my water as clean as possible by doing waterchanges with good source water and limiting feeding, and then keep pulling out what i can. eventually it won't be able to survive with nothing to feed on.
you could also add a refugium to your system to compete with the caulerpa for food, if you haven't already.