What does this mean on an anemone

[mike31154]

That's unfortunate. I added a BTA when my system was quite new, probably should have waited but didn't know any better at the time. Surprisingly the thing made it through thick & thin, split many times to date & currently have the original & 2 clones in the tank. They're spreading out & doing a number on a couple of corals close by. If you decide to try another, BTAs are a bit tougher & more tolerant of less than ideal conditions than some of the other species.