I can tell you what I did to rid my tank of them, but I would certainly not recommend anyone try it!
I was up early one morning, and heard a loud pop! Thought my tank broke! Then I saw smoke coming out the doors.
Seems the electrical cord to one of my ATS lights had a split in the sheathing, and touched the water. Shorting out the light, and causing it to smoke a bit. The smoke was certainly in the water in my sump, I could smell it in the display. While I run carbon 24/7/365 I didn't think anything of it, and just left it be. Figured the fresh carbon that I just changed yesterday would take care of the smell. Of course I pulled the plug and light from the sump. LOL
My corals sulked for a couple days, but everything rebounded just fine. Only thing that happened that I could tell, was it killed every single vermetid snail in my tank! This was a few years ago, and I haven't had any since.