3 runtz autos, coco/perlite hempy buckets. Been growing for 30 days, 65 day flower. Sp3000 led lights canna coco canna nutes, ppm out the bucket is 450, pH out the bucket 6.2 the new leaves seem too skinny to me, also the edges are curling under. They look and act healthy otherwise. Been on a pk boost for 2 feedings now, pretty sure that’s what burned the tips…any ideas?