Botanicare KIND Base (4 - 0 - 0)KIND BASE 4 0 0 + 5% Calcium Kind Base is unique because it contains all of calcium without trace minerals, magnesium, or sulfur. By including all of the trace minerals in the Grow and Bloom formulas growers can effortlessly customize their calcium and nitrogen levels without affecting the balance of these essential elements. This revolutionary formula was designed to allow for maximum versatility throughout the grow cycle. Using Coco Coir or Reverse