Abe - could you refresh my memory on your tank size and equipment? Also if you could post water params and temp.? I had a bad experience with overcrowding in a 75G tank we had just prior to our upgrade, and lost an Atlantic Blue tang (along with 5 others after her)...the ABT looked exactly like what you are describing - looked like the after effects of a sunburn and was literally peeling flesh. I truly thought some horrid disease was ravaging my fish. Started out as marine ich on the ABT, then her extreme stress (pacing) with the added overamped bio-load took out the others. Some of the fish made it through without a trace of illness (other than increased stress for awhile) including two other tangs.

W.