Can't tell if this is bad or not.

[aggie13reef]

I picked up an acro frag yesterday at the LFS and It looked great in the store. Might have been turned to where this was at the back or something but I am still new with SPS trying to figure out what this is and if it is bad. I cannot tell if it is the skin peeling off or not. Params are fine, Alk 9.0, Ca 420, Mg tested a few weeks ago can't remember exact number but in range. Nitrate ~5, nitrite 0, ammonia 0, Phosphate Undetectable salifert. I have some pretty hardy SPS that are doing fine and an A. turaki that is doing fine. Any help would be much appreciated!

Sorry for the pics best I can do is my iphone.

 

[aggie13reef]

Well tonight the frag looks much better

Does anyone know what might have been going on in my previous pictures?