Are you doing a foliar spray? Almost looks like a foliar spray when the lights are on. Maybe thrips too. I hope you get it fixed soon. It's it on old or new growth, or both?
I have been spraying with neem oil when you say foliar spray do you mean something like EM spray or a bug spray? I haven't looked in the soil for bugs. Didn't think of it at the time. I'll check after the rain stops. All plants are 7 weeks and 2 days I got the Auto's in the house and the photoperiod outside.