MYTH #5: Reptiles can't see red light Reptiles can see red light. Most — if not all — reptiles can actually see more colors than humans can. Using red (or any other color) bulbs in a reptile's terrarium will wash their environment in that color and affect their ability to see properly.
Are colored lights bad for reptiles?
Reptile Vision The visual spectrum humans can see is between 400nm-700nm. Ultraviolet light which humans cannot see is between 320nm-100nm. Therefore, when were attempting to heat our reptiles at night while not disturbing them by using colored bulbs it turns out we are indeed disturbing the circadian rhythm.
Can I use a red light for my bearded dragon?
Bearded dragons simply do not need ANY light at night, red or otherwise. Like any other light, this red light will also end up disturbing their sleep. Remember that bearded dragons can see (and sense) extraneous lights, so you would do best to turn them off completely.