Help My Torch Stop Shrinking


I've got a green torch coral and today I noticed that on of the heads has been consistently shriveling up. the other heads have not changed much in size either way since I brought it home about 4 months ago. It could be just paranoia but it seems like all six heads look a little wilted, more so than normal.
My parameters are good and everything else is flourishing but the Torch. I have it at the bottom of a 45g breeder in medium flow with 2 18,000k T5 lights and 2 VHO's.
Could the Camel Shrimp I have be sneeking bites or a feeding problem
I'm cluless.
If ANYONE can help or has exp. with this type of problem please help.