General Hydroponics CaMg+ is the ideal supplement to provide a natural source of Calcium and Magnesium, critical elements in a plants growth cycle. These elements are often absent in many fertilizers and potting mixes, resulting in stunted growth. CaMg+ is biologically catalyzed from oyster shell, dolomite lime, and natural plant extracts. Through the use of organic compounds, CaMg+ increases calcium and magnesium transport into the plants. This optimizes plant metabolism, enhancing growth and creating healthier flowers and fruits.