Sick BP, HELP!

[Stewart_Reptiles]

1. Besides a vet, how do i care for him and treat this at home?

You don't, it's too late for that, you have an advance case, you MUST make a vet appointment ASAP, get a culture and get the proper course of anti-biotic treatment.

2. He has been caged with my other, older and larger BP and she is not showing any signs of being ill. Once i discovered he was sick, I separated them right away. I have not sanitized either tank, because i don't know how to do that properly without harming them.

You clean and bleach everythong, dispose of the old substrate and replaced by the new one.

3. How do i sanitize the tanks? I have dawn dish soap and bleach on hand. wash with the soap and spray with a bleach solution and let it sit then rinse?? what?

Clean with soap than let soak in bleach solution for 30 min, rinse well and let dry.

4. How do i sanitize their hides? They are those half wooden tree hides. Do i soak them? If so, how?]

Same as above.

5. If i use a bleach solution, i read that a 5% solution is how to do that, but i'm not sure how to make the solution (do i use gallons, liters, what?) and what is the ratio of bleach to water?

You use whatever measuring unit you are comfortable with it does not matter, the ratio is 5% of bleach, for example 1 liter solution would be would be 95 cl of water and 5 cl of bleach. (That's simple math)

6. How contagious is this? Is it likely that my big girl is going to get this too? Is there any preventative measure besides separating them and sanitizing the tanks that i can take so she doesn't end up sick too?

Too late for that sadly they should have been house separately to start with, and now since one of the snake has an advance case I would get a culture on the second animal as well, they were both drinking from the same water dish which means the chances of the second animal being infected are pretty high even if for now she appears fine.