Read the care sheets at beardeddragon.org. I believe the juvies need it hotter than the adults. I have 2 adults and don't measure temp, just put a basking flood light (not a compact florescent) at one end of the cage with something they can climb on to get close to it. Remember that you will ultimately need a 40 gallon tank at a minimum, florescent light that you'll have to replace every 6 months and a basking flood light. They're fun to keep but a bit expensive.