I think their hot spot temp is fine ~85. I do aim for around 75 for cool/ambient temps, so I can see why you want to say to raise it some. Mine have shown no difference in behavior down to 72 for a week or two, so I don't think it is low enough to be an issue as long as the snake is moving to the warm end for digestion/is no sitting at 72 to digest. (Short term low temps were due to a delay by us humans swapping over to heat from A/C)
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