I recently converted my BPs over to a rack setup. I did so to save space and also because I have become more accepting of the idea that BPs are not display animals thanks to this site. It's in my bedroom and if I had it my way I'd sleep in 60 degrees every night. I feel like even a few degrees would do wonders for my own quality of life, but at what expense to theirs?

So here's my question: What's the lowest range you personally feel comfortable dropping the ambient air/cool side temps to before increasing the risk of stress or illness for a Ball Python?