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calcium deficiency?

  1. Honkfro

    HELP! Possible calcium deficiency

    Hi are these brown/orange spots a calcium deficiency or something else? ..... thanks... Paul☺
  2. C

    Calcium deficiency?

    I give the plant (GG#4) Cal-mag every watering since the brown rust spots started appearing 2 weeks ago. The bottle calls for 1tbs per gallon of water and I give it 2tbs sometimes 3tbs. PH is always 6.3-6.5 and it slows the symptoms but I'm still getting little brown spots between the veins on...
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