I have a female veiled so I only know this one for sure. For a baby veiled ideal temps for basking are around the 78 to 80 range. When your female gets older (sexually mature) you will want to keep her temps around 82 to help (in addition with feeding amount) to keep her from laying large infertile clutches. I believe the basking temps for an adult male velied can creep into the high 80's/low 90's? not 100 percent sure on that. It is good for it to be significantly cooler (low to mid 70's) at the bottom of the cage so your cham can choose where it feels comfortable. At night it is ok for the temps to reach the mid 60 to low 70's. hope this helps.