suggestions for removing encrusted sps on glass

[favites]

Hey guys-- I have a few colonies that were originally on ceramic plus that have encrusted over and spread several inches onto the glass bottom. I tried with a razor blade to 'chip' away at the ceramic plug base without success, but was wondering if anyone has a suggestion. thanks

Mark

 

[Hella_Reef]

Kalk paste or even turning off all flow and putting nopox in a coral feeder and spraying what u want dead with the nopox will do the job. Make sure to not hit any other corals, Just leave pumps off for 20 minutes. Then it’ll kill that part of the coral. They talk about it in Tim’s tank in the new video uploaded by American reefing channel on YouTube