heat stress . what is your lamp distance give us more info
Ya more than likely i was heavy feeding which is why there is old nute burn but was using fox farm big grow for veg and fertilome blooming and rooting for flower which i think is where i went wrong stopped nutes completely for about 3weeks now just plain waterShe looks short on K and P. What are you feeding, how much, how often, what are you growing in, etc? The devil is in the details.