Calplex is a natural calcium supplement in a soluble liquid, formulated to correct calcium deficiencies in all types of plants. It is readily assimilated into the root, stem, and leaf cells of plants. Calcium plays an essential role in plant development and overall plant health. Key functions of calcium include: cell production and growth as well as aiding fruit sets. Mild calcium deficiencies can appear as dark green foliage and very stunted growth normally occurring in new growth first. Severe deficiencies can turn new growth into shriveled, off colored, dead leaves before they have a chance to develop. Since most plants can absorb calcium at very high rates, you may need to replenish their supply from time to time with a calcium supplement like Calplex. For use in container gardens and hydroponic systems.