first of,i would give it a humic fulvic feeding,,dont know what size pots you use,,i use 5 gal buckets,so this is what i do,,just me,i take a 1/2 gallong milk jug,on bottom and on one side,poke 2 small hole,one on each end of jug,sit it right beside the stalk,put your feed or water whatever you using,in the jug,turn around walk away,come back in 30 minutes and that whole pot will be watered,not just the sides or just the root ball ,but the whole pot,,that is a classic ph problem some were,like someone else said,are you sure your not using a time relese nutrient in your soil,,anyway,,those pot get hot as hell under them lights,,and im guilty myself as you can tell from what i described above,,i run to many strains at once ,get in hurry dump water in the bitches and move on,,if you feeding a gallon of water,,most is coming right down the sides cause the soil shrinks to get away from the heated sides of pot,,but that ph is out of whack big time,humic fulvic is like asprin for a head ache in my opinion,,so good luck friend and try some the things all the guys have said and im sure you will straighten it up,,dont worry about them leaves,most folk dont smoke um anyway,,if your still getting white pistols,its not to late to salvage,,good luck