no pics means no help yo.... it's probably nute burn....
flush that soil out.... let the water be a little alkaline (not too much, maybe 0.3-0.5) more alkaline (dnt make this a habit)... that way the acidity won't be optimal for nutrient absorption.....
if it's in fact nute burn flush that puppy out... 3-4 times the amount of soil in correctly ph'd water(slightly alkaline in you're case), when the lights first turn on.....
i don't know how good advice i'm giving you right now, but it's all i can think of....
also, flush once a week, don't go flushing everyday or every two days or some shit.....
flush that soil out.... let the water be a little alkaline (not too much, maybe 0.3-0.5) more alkaline (dnt make this a habit)... that way the acidity won't be optimal for nutrient absorption.....
if it's in fact nute burn flush that puppy out... 3-4 times the amount of soil in correctly ph'd water(slightly alkaline in you're case), when the lights first turn on.....
i don't know how good advice i'm giving you right now, but it's all i can think of....
also, flush once a week, don't go flushing everyday or every two days or some shit.....