What should I reduce? The soil pH should be 6.5, not 5.8. I watered 2 days ago with pk 13-14 1ml/1l + power roots 0.5ml/1l + bud candy 1ml/1l. It came out to
PPM 960
EC 1.7
pH 5.5-6
I raised the pH Up to
6.5-7pH
I watered the plants with this mix, 1.5l per plant. I water all the plants with the same mix. I should add that the lower leaves are not like this. Only the upper ones are affected halfway. I think they might just have had some nutrient reserve left and I might have over-fertilized them a bit. That's what I think, but I could be wrong. It doesn't look like a deficiency to me, more like a ++.