Today I got my first russian tortoise named Kobe. He is currently living in a 45 gallon glass terrarium with a screen top. His temperatures and humidity levels are fine during the day, but I am concerned about his humidity level at night. I keep my house at 78 degrees F and I read that temps can drop as low as 70 degrees F for russians at night, so currently Kobe does not have a night heat lamp. Right now his temp is sitting at 80, but his humidity sky rocketed from 40% to 75% within a few hours. I was wondering if this is normal or if not what I can do about it? Thanks everyone!