I have always loved pythons but never actually owned one. That changed today. I was excited to finally get to see the BP my niece has had for about a year and a half. When I saw the conditions under which the snake was kept I decided to bring it home as she obviously wasn't interested in taking care of it. It was kept in a very cool basement with no heat source. There were no windows so it had no access to a normal light cycle. She kept it in a glass tank with a screen top and it was filthy with feces and cat hair in it. I can't imagine the stress it felt having a cat climbing on the screen.
I have washed the tank with hot water and soap. I replaced the half log hideout with a 6in opaque plastic bowl with a hole barely big enough for the snake to fit thru (it probably needs to be a little bigger since it's back rubbed going in). The snake is about 30in long and looks thin to me. It has definite wrinkles when it coils up that I've never really seen in pictures (at least not as pronounced). It hasn't eaten in 3-4 weeks since she is afraid of mice and her ex-boyfriend used to feed it for her. Now for the questions.
1. I know the tank needs to be disenfected but I have no idea what to use. I did see something on the pro exotics website that I was thinking of buying. Any advice here would be appreciated.
2. I put a UTH on the tank and replaced the repti-bark with lizard liner carpet. I added two digital temp/humidity gauges. I'm not sure where I should place the sensors though. At the moment they are under the carpet since I wanted to keep the snake off them. One is directly above the UTH and reading 90, the other is next to the water bowl and reading 81. Should they be somewhere else? Do the temps need to be lowered at night?
3. It is in the middle of a shed that doesn't appear to be going well. I don't know when it started but it is comeing off in small patches. I put a wet t-shirt on the screen but the humidity level won't go above 55%. Could the reading be wrong due to poor placement of the sensors (under the carpet)? I did try to soak it a little in warm water but it wasn't enjoying it and was making it difficult. Should I be a little more forceful and keep it in the water or should I just let it be since it's obviously pretty stressed?
4. I've read that snakes won't eat during shedding, should I wait until it's done to even try to feed it? It does look thin. I've read about BP's going months without feeding but I can't imagine this being good for their health. It has been feeding on live white mice, should I continue with this for a while until it adjusts to it's new home? Would it be a waste of time to try frozen?
5. The climb branch is basically like a small tree that couldn't possibly hold the snakes weight without falling over. Would it be possible to use the half log or should I look for something else?
Sorry for the length of the post. I think I'm about as stressed as the snake is right now, I don't want to do something stupid and make things worse. Thanks for reading and I look forward to any replies.

