Bottom fan leaves were the first sign about a week ago. I removed those and assumed cal/mag issue. Started running cal/mag on top of my AN base nutrients, now noticing it has spread to the upper leaves! I removed some effected leaves and came back the next day to see more had spotted. Now I’m noticing the first spots on lower fan leaves of my 4-week old photoperiod plant that is vegging in the tent next to this autoflower. Will this affect my grow? What do yall think this is? Bugs? Or something going on with nutes? I have noticed slower growth since this problems come up.
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Is that the pH of the nutrient solution prior to going in or the runoff pH? I'm thinking manganese deficiency? In coco, manganese is best absorbed by the plant when pH levels are between 5.5 and 5.8 ... I personally always feed in at 5.8 pH and never check the runoff pH.