Help!! Asap

[Luwe2008]

I just noticed today one of my Acro's skin is peeling off..
What is this caused by?
Other corals look fine and my parameters are all fine aswell.

What usually causes this to happen to sps?

 

[gasman059]

serch for RTN--- rapid tissue necrosis. U got lots of reading to do. Good luck

 

[mike_cmu04]

Can be lots of things temp swings, alk swings, problems with your water parameters, pests. Just about anything can cause it and sometimes you probably will never find out what did.