this website lists BTA's as reef safe, there seems to be a difference of opinion. do i need to keep moving my corals away from the BTA?
Thanks for your help
BTA's have among the mildest of stings among anemones. That said, no anemone is really reef "safe" for the exact reason you now are seeing.
A moving anemone is often an unhappy one. Check your lighting and water parameters carefully.