The white spots on the leaf margins look like a Calcium Deficiency.
Your Petiole are really dark showing a Phosphorus deficiency.
Your in Hydro/
Lower your pH
Great reference chart. Hopefully new guy checks it out. I'll be saving it for reference, fo sho!
Question -- in coco (recycled hydro) I was running 6.4-6.6, and that's where I saw optimal performance (General Hydro nutes with bloom crystals during flower) I tried running at "hydro recommended" and saw a lot of lock-out. Fixed the pH, fixed the problems... Ideas on the why for? (500W florescent, I guess it would be drain to recycle, ambient temperature 75-80, strains were Ex. Cheese, Afghan landrace indica (hash plant) and a cross of the two (intentional.) 3 weeks veg, 8 flower.)