Well said by Kingofnobbys...Since you're not very experienced with bearded dragons we'll try to help you get your setup correct now so he will not develop any future issues...Is he a young baby that you bought from a pet shop, or an adult that you adopted? Either way, you need to concentrate on his lighting and temperatures first and foremost, as beardies being desert reptiles require very specific lighting and temperatures to survive and to stay healthy. Unfortunately most if not all of the "Kits" that are sold contain nothing correct for a bearded dragon but the actual tank itself, the lights are garbage. First of all, throw the red nighttime bulb away, your beardie doesn't need any nighttime heat source at all as long as his tank stays at 65 degrees or higher, and most houses are warmer than that. They like their temps at night to become much cooler than their daytime temps so they can sleep comfortably, and they also need total darkness at night, no lights at all. And never, ever, ever use ANY COLORED BULBS AT ALL! Beardies see in color just like we do, so colored bulbs whether red, blue, green, yellow, "moonlight" or black, it doesn't matter, it can really cause their eyes problems and it's just completely unnatural. Your main goal is to replicate natural sunlight as closely as possible for him, so obviously colored bulbs are a no no. So throw the red nighttime bulb away and let him sleep in complete darkness at a nice, cool temperature.
Now that you've got the red nighttime bulb in the garbage, we need to talk about
UVB light. The
UVB light is the most crucial and important item you will ever buy for your beardie! His exposure to the correct wavelength and strength of
UVB light for a long enough period of time every day is what will determine his appetite, activity level, whether or not he grows properly, whether or not he manufactures vitamin D3, whether or not he absorbs any nutrition at all, including any Calcium, and whether or not he develops any nutritional deficiencies and diseases thereof, like Metabolic Bone Disease (MBD), which is a very, very common issue for pet bearded dragons, along with failure to thrive and stunted growth. This happens because most UVB lights sold are not appropriate for beardies, even the ones that are marketed for beardies, and pet shop employees and even breeders give horrible advice about lighting, temps, diet, everything. So new owners think they're doing everything correctly when in fact they are hurting their beardies. So please take buying him a proper
UVB light and getting it mounted appropriately very seriously.