Animal Cookies Indoor

well at the end of last week I got a UVC light and ran it for 15 minutes in the tent . you can see the damage it has done to the plants . the leaves are seriously light damaged and curled and or dead . it was very fast and it happened after the light was used I can almost 100% say its from the light . the plants got watered the day before about 32 hours before the light was used and showed no signs of anything bad . after the light was used the plants went to dark when lights came on damage was clearly visible and heavy .I gave all the plants 1 liter of just water at a ph of 6.5 just to be safe and level out any over feeding or over under ph just incase . but with this heavy fast of damage I think it would have shown after feeding not 32 hours later , if it was a food issue . pretty sure the cleaning light did it . at least I know it will kill damage mold spores and small bacteria and bugs to . be great for use between crops not during . going to defoliate today remove the dead leaves .[ changed the room and tent around a little put large dehumidifier in the room . the tent has a 6" intake for positive pressure then has an outtake working almost as hard to pull air out of the tent through a 6" charcoal filter that outtakes into the room . the hole room is dehumidified ] top dressed the soil with some NPK RAW silica its a grey powder . I find it leaves a light residue on stuff so I dont like to mix with my food .