reverse osmosis

  1. N

    New Grower Magnesium deficiency? Week 4 of flower /FFOF soil

    Day 60 from sprout. First time ever grower here and think I have a magnesium deficiency (Blueberry Auto) but would like thoughts from others here. I have been feeding 5ml of CalMag per 1 gallon of RO water for last month. Do I increase CalMag to say 7ml or feed Epsom salt in addition? Or maybe...
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