Indeed, proper pH levels will affect nutrient uptake, too much one way or the other, and they can't properly uptake certain nutrients.
Organically this gets balanced out, but as I grow sterile with salts and perlite/coco I need to supply the correct ph range.
New batch is coming in nice, sunflower and lavender are growing
New growth coming in nice shade of green.
Cannabis plans usually prefer a slightly acidic root zone 5.5-6.5, varies on medium and cultivation method used.