Scale rot or something else?!?!?!?

[Zombie]

Ok so my newest ball has about 3 brown scales on his (or her) belly, it's in a terrarium with my older female which appears to be fine other than the sudden accurance of mites -. - not sure if they came from the newer snake or possibly the substrate? Repti bark. I acquired the ball from pets mart. Not a smart idea on my part but it was 40 bucks and looked healthy and mite free until I got back from my vacation. The snakes were fine and the little one has developed those brownish scales in the past few days. There rough not smooth like my other snake. Do I isolate the snake and put it on paper towel substrate? And treat for scale rot or what I'm not sure what to do or what is wrong. I'm going to start my mite cleaning tomorrow and putting down newspaper or paper towels until the mites are gone. Do I use mite off or something else for them? Sorry for all the questions I'm just very concerned about my snakes. The temp is 75ish and humidity is 50-60. Also how do I attach an image do I have to upload to like photo bucket and paste the link?

The temp is 75 all over or one side is hotter than the other? Your humidity is good. Like the person above me said upload your pics to photobucket and then copy the IMG code for the photo and paste it here in a reply. What are you using to check temps also?

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