Yes! I had no idea just how mean it was until I changed my water flow. After it stung my chalice I thought maybe it would get along with an acan, but it was even meaner! The acan doesn't look too good, but I don't want to throw it out, however, I have nowhere to put it while it recovers.
Haha. I believe this piece came from you many, many years ago. It never bothered anything before, but now it's bigger and since I changed my water flow, it seems to be more aggressive. I would move it, but it's become part of the base rock.
Had the exact same problem. Beautiful coal, but super mean and devoured anything even remotely close. I just recently got fed up with it after losing a duncan and did my best to remove it, which was damn near impossible even with the use of bone cutters and a chisel.They really grow into the rock.
Why is it the corals you want to survive sometimes die despite best efforts, and others won't seen to go away no matter how hard to you try to get rid of them...