I am not new to this but before I had my own BP's and had a environment tank. I am now responsible for my friends snake while he's in boot camp and away. I like to keep my house cold at night and I noticed when I got up in the middle of the night my house was below 60 and his cage was a little on the cold so I turned off his night light and turned on his day light. How can I help keep his tank heat regulated and also what temps should it rang around?