There's obviously some change in your system; one that your purple-tip is reacting to but not your other corals. Could be as simple as a one-time temp spike or some params swang a little to fast (dosing) for it recently.
Your powerheads good and clean? Decreases in flow can be a source of stress, especially in SPS.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.