Please help- white fuzz on cleaner shrimp face

[ling313]

Please help. My skunk cleaner shrimp has white fuzz on his face and weak front legs this morning. Normally he is in his cave chasing the clownfish out, and comes out for food at feeding time. This morning he was on the front rock hiding and has a white fuzz on his face with his front legs looking weak.
amm 0
Nitrite 0
Nitrate close to 0
Calcium 520
Mag 1200
Ph8
Temp 79

 

[Idoc]

I can't see anything on its face in this pictures.

But, many strange things on their shelf go away after they molt. I've never seen one in the molting process, but maybe that's what it is about to do.

Outside of this, I don't know any treatment methods for shrimp.