I personally just use a CHE and no actual light bulb at all. My snakes get their lighting from the room and from the plethora of lighting my beardie needs. I run my beardies lights on a 13 hour day timer. On at 8am, off at 9pm. Summer time I usually change it up and do on at 7am, off at 10pm. Any animal needs some night time to reset their clock. imagine you being kept in a room with lights on 24/7. You'd go crazy.