Calcium Foliar Spray?

Discussion in 'Growing Marijuana Indoors' started by Probst, Oct 4, 2010.

  1. I've narrowed my problem down to calcium deficiency in this soil. One of my girls is looking really sick, rust spots all over, leaves dying. I was going to add some crushed up seashells to the topsoil to fix it, but could I make a foliage spray out of the crushed up shells and some water for the same effect, only faster?

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