@Ezzjaybruh, I got a UVA resin cure LED light from Amazon for $30. They come in 20 and 6 watts. You can not unfortunately find any LEDS that can output a wide UVB spectrum, however the resin cure light does contain a small amount of UVB and a lot of UVA. I suggest you check out apogee instruments YouTube channel. On this channel you will find Bruce Bugbee professor of cannabis cultivation and NASA scientist. Who is funded by NASA and USDA to study the effects of different light spectrum on cannabis. The university of Utah is the only college in the country that has such licences to study cannabis growth.
There you will find a video where he shows his results for UV spectrum of light. It has been proven effective only in short bursts. UVB is effective in smaller bursts. But UVA is also effective in much longer bursts of 2 or 3 hours. Depending on how close to the light your plants are and will only be effective if you have never before exposed them to UV light.
The apogee instruments YouTube channel from the university of Utah is the best to get 100% proven evidence for growing the best cannabis. As it is clear cut unbiased information and no one is payed better to debunk the myths than him.
Also far red and blue light spectrum is a wonderful thing to check out on his channel as well. You can use blue light to create shorter bushy plants in veg. Then far deep red in flower to promote growth of flowers or make normally bushy plants taller. Blue light in flower in conjunction with UV increases terpenes and resin production as well as being 100% effective at killing small insects like thrips.
like 1