I no longer do but ive used blacklights for years for herps and I know a couple breeders that uses blacklight for their display snakes. From my experience, what I've read, and those breeders information bps can't see blacklight. Some companies even sell reptile night black light bulbs. It doesn't give off anything harmful to your snake and like I said is not visible like reds and blues. While true that some people use UV florescent lights for D3 it really isn't beneficial IMO bc they hide most of the time so exposure would be minimum and you can't run the tubes at night bc it is white light. Lighting is not really needed, I use lights on dimmers in my PVC cages to get a day/night cycle bc of the dark room there in but it isn't necessary but I keep them real dim are on a timer to shut off at night. You could run any night bulb (red, blue, black) 24/7 bc the snake can not see it, I will say that they do come in handy when feeding in a dark room.
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