uhhhh hmmmm psssst wait what... could be a long list of things from underwatered over nuted t light burn ph tons of things
check all yer main settings first pollanation hmmmmm
Its not underwatering, I feed it general hydroponics lucus formula nutes, I dont think its light burn because it hasnt affected the tops, I have gave it ph balanced water the last three waterings the fan leaves are begining to yellow but more of the buds are burning.