BP's, and most snakes in general don't really need a light cycle. Also lamps can dry out the air/humidity in your tank, I wouldn't recommend using them. There is always a light on in my reptile room, and without fail, all my snakes are out and about at some time during the night. If you really want to have a light cycle, just keep the blinds open in the room during the day and close them at night. Even with a light in the room on there will still be a noticeable difference, and like I said it isn't necessary to have a light cycle for Ball Pythons. Hope this helped![]()