This unique product is a "Live Sand Booster" and a live rock enhancer. Marc Weiss' Coral Vital LSB accelerates the biological activity in your marine aquarium and destroys ammonia, nitrites and nitrates naturally. Use with Coral Vital to truly create an ongoing marine cycle. Enhances the ability of micro flora and micro fauna to consume and utilize waste products. Contains all natural enzyme catalysts. Contains no nitrates or phosphates.