Hi there, it's not scale rot, just some type of blemish that they can get that is harmless. Can you post a shot of his back end showing both of her legs out to the side to compare colors on his other leg? But no, that's not going to be a problem.
Clapton is acclimating okay I think. He's quick as lightning so I'm not sure how much I should bring him out of his house yet. He's not at all interested in his salad though. I wonder if I should change what I'm giving him. Least he's eating his crickets.
Things to do:
Buy calcium powder
Material to raise surface for basking spot
Scenery decals for back of tank