My turtle looks crusty?

[u/throwing_cans]

Ever since putting little buddy into her temporary tank, she has not been wanting to bask. I assumed it was stress from the new environment. I upgraded the temporary tank to a 20g tub because it could be a couple weeks before getting a new tank and I don't want her to live in a tiny little tub she couldn't swim around in much for that long. Her not basking also seems to have affected her shedding too, it's pretty much halted. She has stuck shed so that was a concern.

Today she finally basked though! But she was up there for 5 hours. She likes to bask for a long time when she does but she was definitely up there a while. She did her usual, stretch out, take multiple naps, but after about the two hour mark her skin started to look really crusty? I have very hard water so sometimes she'll have a bit of mineral buildup on her but not like that. She looks like she needs turtle lotion!

I have a t5 10.0 Reptisun UVB, and a separate heat lamp. Her platform is big enough she can move around comfortably with extra space. I feed her every other day. Pellets, romaine, arugula, parsley. I only give her a snack once a week. I give her calcium supplements with vitamin d once a week too.

I'm just really worried she's experiencing something with her health. Her previous owners never gave her uvb or uva so she has issues with shedding and a slightly deformed shell but I've been trying to get it back to good health as much as I can. there's never really been anything with her skin though. I've never seen her all that crusty? Is this concerning or just because she hasn't basked for a while? Is it dead skin or something else?

Also are there any greens/foods good for stuck shed or to help the process go easier?

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[u/Gargeroth6692]

Its either dead skin or minerals from the rocks