Not sure exactly where to post this question but I am week 8 into an organic grow and running into what I think are Mg deficiencies. The grow style is using dry amendments in a coco/perlite mix with top dressing at the start of flower and midflower. Watering with dechlorinated tap water ph’d to 6.5. I just recently started ph’ing to 6.5 the last couple of waters. Before that I was ph’ing to 6.8. Are the spots on the leaves due to ph fluctuations? What would also be the best way to correct an Mg deficiency in an organic grow? I’ve tried Epsom salts in water and also a foliar spray but hasn’t seemed to help it. Any recommendations are much appreciated!