I don't really understand. But anyway ZooMed sells blue glass bulbs that are meant to be daylight bulbs. They also sell red glass bulbs that are meant to be night bulbs. They claim that reptiles cannot see the red light. I have tested this and their advertising is just wrong. BD's can see the red light and it disrupts their sleep. ESU Reptile and Exo Terra make black nightime bulbs that emit far less light than Zoo Med's red bulbs. The black nightime bulbs are the only ones I would consider using at night.
In arid areas the temperature is hot during the day when the sun is out. Reptiles bask in the sun to get their core temperature up for digestion and absorb the UVB from the sun to metabolize calcium properly. At night these dry area are quite cool. These are the conditions a Bearded Dragon is designed for.
Therefore, as stated earlier unless your house drops into the low 60's at night, no light or heat should be on for the 10 night time hours. If your house does drop below 60 then a black bulb or Ceramic Heat Emmitter should be used to bring the dragons enclosure temp. to 65. No higher than 70.
A dragon the size of yours should be eating at least 40 crickets a day between 2 meals. If he/she is not then some changes in husbandry need to be considered