Generally, Yes! just like us, snakes should have a day night cycle. A red bulb at night as I mentioned earlier will allow you to see the snake but wont upset it. snakes apparently cant see into the red light spectrum, so to the snake it appears dark. dont be too concerned about light from the tv, dont think its bright enough to bother them, unless they were very close. if your worried about room lights at night, cover the enclosure till they are off.