It all depends upon how warm the room got.
If the room increased 5 degrees, I may drop the thermostats down 3-4 degrees. Sometimes I keep going up and down during the day until it is right. You just have keep adjusting and measuring with your heat gun a few hours later.
Thank you,
The cage on the left left is an AP A-25, 4x2x4.
The bottom 3 on the right are AP T-25, 6'x30"x18" , the top one is a Boaphile 6'x2x18"
You will be so glad when you get your T-12!