Hey Guys, Excuse me i am new, and still in the SUPER paranoid phase...

I've modded my tank by adding Duct Insulation to 3 sides, Put a Mini UTH on the side of the tank (at the top) and added a Light fixture 1 foot from the top of the tank with a 100w normal bulb.
Plus my Larger UTH for the hot spot, on a dimmer set to about 65%(max it has ever gotten to was 95deg.) ....all of this keeps me at the following(during the day)
Humidity 55-60%
Hot Side:
Belly = 89-92 degrees
Ambient = 84

Cool Side:
Belly = 75-79
Ambient = 78-80

My worry is at night the temps drop to the following, with my room thermostat set to 70 (highest it will go)
Hot Side:
Belly = 83-86 degrees
Ambient = 77

Cool Side:
Belly = 71 - 73
Ambient = 70

Do you think i need to be adding a Space heater to my room at night?
Cheers