i've had a BP for a few weeks and was going on the advise given at the pet store. had a day heat lamp for day and a infrared night heat lamp hooked up for evening. i was reading 90-92 daytime and mid-high 80s at night. i found this forum in an attempt to gain knowledge and just hooked up a UTH along with a rheostat control and the hot side belly temp is 92. cool side belly and air temp are 75. i see the prefered temp for cool side is in the 80s .do i need a second UTH set in the 80s(please let me know what #)? And how about the air temp? is this what is called ambiant temp? and is this something i need to suppliment with some other type of heat source?

specs on tank... 29 gallon glass. screen top with the tin foil duct tape method. humidity is at 65. all readings with digital. he seems very happy and healthy. he's eaten both times i've fed. just looking to get everything right to avoid future complications

thanks in advance