N deficiency? Nute burn? pH imbalance?

Here are pix from today and my plants are looking a little unhealthy. I tried finding the problem and I think I have it narrowed down to N deficiency, nute burn or pH imbalance. Which one is it???

personally i would go fot nute burn.

When did this problem first start to appear? after you started feeding?
looking at your soil i would say it was good quality, perlite etc, so should not need full strength nutrients at all until flowering stage.

just water with no nutes for the next four or five days and see if they pick up

Yah i would say nute burn just went thru an ugly stage with my little one and ended up pruning my first 2 sets of nodes on my 3 weeks old plant, the problem went away the minute i changed nutes but the leaves that burnt bad and couldn't be repaired were chopped...your plants look like they were doing fine... how close is your light? what is your PH and do you spray your plant leaves with any kind of nutrient?

Start with no nutes to feed them then add a little bit at a time until no more crispin is happening

Playing it safe, i'd say nute burn but if your pH is off then it could need Nitrogen. i don't grow in soil so won't venture a remedy though i understand flushing is usually recommended.

I just had the same problem..... Flushed mine, pure H2O, 3 time water to soil. no nute for 4 days they have recovered nicely, trimmed leaves that were to far gone.

I'm just giving them pure pH'ed water for a few days. Considering that at least two of my four Big bud's are male, they will just have to deal with it over the weekend.