Xenia problem

Any suggestions on how to get rid of pulsating zenia? What began with a quarter sized PC of rock with zenia 2 yrs ago has transformed into a real nuisance. Any natural predators that would take care of this. I have to cut back and remove every few months and this gets to be very difficult.

My reef is a fully established 265 gal. With skimmer, co2 reactor, ro filter, auto top off, refugium, led lighting, wave maker, auto feeder, etc.

I'm tired of having to cultivate this beautiful soft coral that has become a pest. None of my suppliers want it.

Thanks for any input.