outdoor nor cal grow need help

ok the proablem im having is my plants started drooping and looking very yellow a few days ago. Im growin purple wreck, blue dream, g13, pineapple wreck and hindu skunk outside from clone. my daytime temps are around 90-92 my nightime temps are around 52-55 im in the mountains at 2200 elavation. I am growing in kellogs soil with about a 25%-30% pertalite, i was watering every day but i cut back when i seen the yellowing starting about 3 days ago maybe a lil more. They are about 3wks old and i have only nuted them once with fox farm big grow and some cal-mag. why are they droopy and yellow overwatering? my ph is at 6.2-6.5 in all plants, the droopy leaves are a firm drooppy to. last year i grew in 30gal grow bags and had no proablems but i think i overwatered this is the first time i have planted in the ground.

i have not watered in 2 days the first 2 pics are of the droopy blue dream, the rest of the yellow pics are purple wreck and the other good shotts are hindu skunk i put them in to show the differences of green