How to kill Encrusting Gorgonian?

[kris2001]

I have remnants of that Gorgonian on live rock since I removed original colony.

Is kalk effective on Gorgonian?
Thanks

 

[Ocelaris]

How about a scraping tool? I got the brs fragging kit, and they had some forceps which I used to scrape off some Monti caps which were taking over. They don't look like they'd do the trick, but they worked very well.

https://www.bulkreefsupply.com/brs-rampley-spong-holding-forcep.html