calcium deficiency?

  1. C

    Possibly a Cal mag def.

    Hi so I am in the begining of week 6 of Veg and was planning on flipping my girls to flower in 6 days. I just noticed these brown or looks like purplish spot in some of the bottom leaves and a few of the top leaves. I’ve done some research and I think it’s a calcium magnesium deficency. Can...
  2. GrowGal

    Calcium deficiency?

    Four month old flowering plant. Today I started giving it Revive by Advanced Nutrients: has calcium, magnesium, and iron. Calcium carbonate is on it's way. Am I on track?
  3. G

    What are they lacking? Calcium? Phosphorous?

    Would appreciate your help guys! Strain is purple Kush, grown in ocean forest soil. Using recommended dosages on fox farm website and bottles I feed them calimag, fox farm big bloom organic, great white rooting, and terpinator. I use Brita filtered tap water. Average temp 74, average humidity...
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