Only Nutrient Excess, or Something Else too...?

With your runoff hitting 1200ppm, you have a severe salt buildup in the roots causing a nutrient lockout that is burning your leaves. The yellowing and crispy tips are a direct result of this root stress and a deficiency in key elements like Magnesium. Since you are already in week 7 of flower, your best move is to flush the medium thoroughly with plain, pH 6.2 adjusted water to clear out those accumulated salts. For the rest, this is nothing serious considering you are already in week 7 of flower, as the plant is naturally starting its final life cycle. Apart from the salt buildup, the buds look healthy, dense, and well-developed for this stage. It is completely normal for leaves to lose their deep green color and fade to yellow as the plant pushes its remaining energy into swelling the flowers. Just fix the root zone with a good flush, and you are on the right track for a great harvest.

Anna, you don't smoke leaves. I don't know which diary, but my wild guess, excessive Nitrogen and calcium blockade or lack. Google "mulders chart ". Maybe you'll find answers. Wouldn't worry much

salut. avoir ta plante on dirait le même problème que j'ai sur ma puple. tu dois avoir une asphyxie racinaire du a trop d'eau et en conséquence les nutriments s'accumulent et n'arrivent plus a être absorber les nutriments donc un surplus. je te dirais un excès de nutriments avec une asphyxie racinaire.. je te souhaite une bonne soirée ❤️