temp question

[mlove]

My house usually stays at 75 degrees so the front part of the corn enclosure is about 77 degrees and the back is almost 80 degrees with two uth stuck to the back of the aquarium. If I use the above light it adds another 2 degrees. At night it's a tiny bit cooler. I haver heard that these temps are acceptable but I'd like everyon'e opinion. Should I add another uth and place them on the bottom rather than the side to increase the temps on the hot side? I could also add a spot heat lamp if I need a larger temp increase. Any other suggestions? Thanks for your help.

Kathy