Diagnosis Help

It could be the early stages of a Calcium or Magnesium deficiency. Both deficiencies start off looking like brown/orange rust on the leafs.

You have a ph issue is my guess. Causing calcium deficiency and potassium deficiency signs. You were using too much nitrogen in flowering by darker green in leaves. Plant may be naturally trying to defoliate as well. You should be getting close to finishing

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My shop recommended introducing it gradually but I'll check the soil PH and then bump it up for the next feeding. Thanks for response.

are you using it at the suggested strengths? https://www.thegreengro.com/product/flower-finisher/ it says 1-2 tsp per gal of water that's 5-10ml and your diary says your using it at a rate of 1.25ml/gal The leaves look so dark though like they have had to much nitrogen. Leading me to think this maybe a lockout issue? and excess nitrogen locks out calcium. The spotting on the leaves looks like calcium/magnesium to me, but I could be wrong. Could try taking a reading of soils PH/EC buy taking a sample and switching it aorund in some distilled water. 1 part soil 1 part water. Best Of Luck!