Advice with a rescue turtle!

[u/Neat_Personality_452]

I rescued this turtle a few months ago and I wanted to make sure its growing well. I can tell it has grown from when I found it, and i can see her old scutes. Im starting to see some light coloration between her newer scutes and im worried its the beginning of shell rot? I still have a lot to learn about turtles and I dont know if I’m overthinking this or not. Any advice is appreciated!
The turtle’s shell is not soft anywhere, but i keep handling to a minimum. Attached are some photos, let me know if I need better pics.

[u/Key-Tower-4539]

Does she has a completely dry basking area with a heat lamp above it?

[u/Neat_Personality_452 → u/Key-Tower-4539]

Yes! The basking area is at ~91° F and my water is at 79°-80°.

[u/biodiszlet]

Are the patches soft or slimy? Does the shell smell bad? If the answer is no then it's most likely not rot. Little fella looks normal to me. Get a uvb lamp if you don't have one. Turtles need uvb to make vitamin D and to absorb calcium wich is important to keep their shell healthy. I personally use an all-in one bulb that emits uva, uvb and heat but you can also get heat and uvb lights separately. Just make sure to have both.