This one has been retracting for a little over a week and this morning I noticed its mouth was sticking out like I've never seen before. I moved him lower in the tank a few days ago just to see if that would help but he hasn't improved. I've had him about 4 months. Is he toast? Parameters are good and other corals are all doing fine. I did get new lights a week or so ago but he was doing this before then and I've been easing the lights intensity up slowly to acclimate and I dont think that's the issue. Thoughts?