Sour-Dee™ supplies potassium and a carbohydrate source in a unique and proprietary formulation. Potassium promotes flower bulk and quality by supporting carbohydrate metabolism. Use Sour-Dee™ every feeding during the flowering phase. You may increase the recommended dilution ratio, up to three times, to a maximum of 30ml during the final 3-4 weeks of flowering. Sour-Dee™ can be used in conjunction with all Cutting Edge® products, or other commercial hydroponic nutrients. Designed for use in Hydroponics, soilless, continuous feed systems, drain to waste, and soil applications.