So I just got my juvenile bearded dragon Caesar a 40 gallon tank and he started acting sluggish and I read up that that’s due to the temps of the tank so what light bulbs voltages or whatever should I be using now that he’s in a 40 gallon tank
For basking, just be sure to use a bright white light that puts out heat. The wattage and distance really depend on the temperature readings so it's important to have accurate surface temperature measurements. Shoot for a gradient of 100-105 in the basking area down to about 75-80 or so on the cool side. Maybe start with a 70w PAR38 halogen flood light and go from there based on temperature readings.