Chinese Reeves shell peeling. Help?

[IMV8N]

This is my first turtle. When I got the turtle there was already peeling. I thought it would clear up on its own but that's not the case. I have a very solid filter circulating and cleaning the water. Water temp is good. I have both UVA and UVB bulbs lighting up the dry area. Turtle has a great appetite. Seems very happy and healthy aside from the peeling. Can someone please tell me what this is and how to cure?

 

[leno]

Hi, from the looks could be shell rot, might be too damp in the habitat.

 

[SteveW]

Looks a lot like retained scutes. I've never dealt with one that pronounced but maybe try Hikari Koi food with wheat germ. I've had good luck with that.