There is no calcerous "caulerpa" to my knowledge, but the effects are probably similar. Several species of the green leafy types go sexual from C. prolifera to racemosa, etc., but it seems to vary from tank to tank no matter what "rules" such as "lighting 24/7" and whatnot.
I have read some reports that Caulerpa species can be quite aggressive chemically, and I have seen this towards other algaes but not so much corals. To do over, I will probably lean more towards sea grasses and Gracilaria sp. of macroalgae that supposedly do not have these tendencies with all the benefits.