UTH's do not change the temperature of the air in the tank, all they do is heat the floor of the cage. this means that if your room gets below 75 degrees you will very likely need more than just a UTH to heat your cage. honestly tanks... especially large tanks like yours are nearly impossible to maintain proper heat/humidity in.
Covering the tank isn't going to do much if anything. Plus you can't completely cover it because that would restrict airflow too much.
Reply With Quote