Humboldt Nutrients DeuceDeuce is derived from sulfate of Potash, Potassium, and Ascophyllum Nodosum.Potassium aids plants in enzymatic function, protein and cellulose formation, efficient photosynthesis and rapid transportation of carbohydrates and starches throughout a plants vascular system.Providing High levels of potassium to your plants will also harden flowers and improve overall plant health.