Multipurpose Phosphate Remover: Natural Chemistry's Pro Series Pro Blend is a multipurpose phosphate remover that also adds enzymes to keep your pool at its peak water quality. SMARTZyme Technology: Regular pool maintenance is easy with Pro Blend. The outstanding benefits of our SMARTZyme technology are combined with our industry leading phosphate removal technology. Reduces Filter Cleaning: Pro Blend's naturally based enzymes will break down a variety of non-living waste in pool water such as sunscreens, lotion, hair products, pollen and more. This leads to a reduction in filter cleanings and superior water quality with less work. Directions: This product is designed for use in properly balanced pool water. Each week, add 1oz per 2,000 gallons of water down the skimmer, into the gutter or surge tank with the circulation system running. Proceed with regular pool operation. Important: Do not superchlorinate at the same time as adding this product. Note: For use in swimming pools only. Tested and Proven Effective: Natural Chemistry products are known for delivering reliable results and making water care less complex. Natural Chemistry carries an extensive line of pool and spa solutions that match your unique needs.