I find that each snake prefers a different basking temp. My big girl Cu will bolt as soon as the temps hit 93*. My other girl, Prospekt, will be totally comfortable up to 95*. My other snakes also have preferred temps, which often times tend to be a tad over or under the recommendation for the species. I figure they know best.

For the BPs, I've got the thermostat at 88*, which keeps basking temps at around 90 with an ambient of 78-82. I've adjusted the flexwatt under the enclosure so that Cu's half stays a few degrees cooler than Prospekt's.