I'll assume it was fragged right before you switched it to your tank if you are saying that heads are still damaged and healing. Between the fragging and tank switch, it probably still needs a little time to recover.
I would pick a spot low in the tank. My acans dont like alot of light and since going from 150w mh's to 250w mh's about 2 weeks ago, some of my acans on the bottom seem to be losing a little color. Pick a spot and leave it be, moving it around will just stress it out more.
Is it ever fluffy or have it's feeder's out?
I would spray a little frozen cyclo mixed with zoecon on it to try and get a feeding response. If it opens, feed it a decent amount and see if it will eat. I dont know what you have in your tank by way of shrimp and inverts that may mess with it when you try to spot feed it but if you have to, put a little tupperware bowl or cup over it so it can feed without being bothered by anything else. If it doesnt open, i would keep trying at least once a day until you do get it to eat.