Equilibrium Natural was engineered by Humboldt to provide your plants with the perfect ratio of calcium to magnesium. The plants in your horticultural system need appropriate amounts of both elements to successfully grow, fruit and flower. Equilibrium is a superior supplement that can provide your plants with the proper balance of these elements over the course of the plant life cycle. The calcium and magnesium you will provide to your garden has also been derived from high quality source materials. With our latest invention, Equilibrium Natural, Humboldt Nutrients offers the ease of a one part Ca-Mg additive with the quality which is one of the best combinations on the market! Quantity: 1 Gallon.