Nighttime temperatures should be between 60 degrees to 70 degrees fahrenheit. Its a good idea to place it 12 inches away from your lizard. There should always be water in a shallow dish or bowl that the lizard can drink and see into easily. Water should be changed daily and the bowl disinfected on a regular basis. You might also want to do a daily misting for hatchlings.
Bearded dragons are mainly insect eaters.
You can however, feed them dark, leafy greens and finely chopped or grated vegetables. The insects they like the most are crickets, mealworms, king mealworms, and waxworms. If you are planning on feeding your lizard insects make sure you also feed the insects. If your lizard is under one month old feed it two to three times a day. If its one to four months old you should feed it two times a day.