Really great info. I also care for a group of Hernandesi and I agree with you it's very hard regulating temps for them. They really don't like hot temperatures, I successfully got mine to hibernate when I finally put the entire enclosure into a shed outside and let the temps fluctuate between 40-50F. I live at an elavation of about 6,000 in AZ and the lizards wouldn't go down with the temps any higher than 50F.