Might be something to do with PWM.
replyAlso the light bulbs have excellent performance at "catching" bugs because they land on hot stuff and die. I had some GU-12 ceiling halogen lights in my previous apartment and the rims were always covered by bugs that decided to land there and as they were hot from halogens, boom, bug destruction machine
Its possible grow lights emit a bit of uv.
replyI would even say it’s very likely. Most Blue LEDs emit UV, and a lot of other-coloured LEDs are blue with a phosphor coating
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