I need a bit of advice for my Kingsnake's care. She is in a 55gallon tank with a heat cord underneath and a red spot lamp on top. I was using just the heat cord but I was only getting readings in the mid 70's for temp on the hot side so I added the bulb for extra. I plan to get a CHE but I had this on hand already so I'm using it temporarily. Now I'm getting mid-high 80's on the hot side and mid 70's on the cool side. The room she's in (which also houses our BP and tarantulas) it maintained around 75 degrees (it has a heating and cooling until installed). Should I be turning the red lamp off at night? Is an overall ambient air temperature of 75 with a slightly warmer spot going to be fine for nighttime?