Pool Mate 1-Quart 2-Pack Premium Algaecide 50, Algaecide for Pool, Made in USA

Compatible with most swimming pool chemicals and when used as directed, is not harmful to the metal, paint, plastic or non-porous glazed tile surfaces of the pool. This product requires no special equipment for treating swimming pool water. The correct use dilution may be added directly to the pool in any spot or added to the water-circulation equipment. This product works best when added directly to the water by pouring around the outside perimeter of the pool. Do not allow swimming in pool for at least 15 minutes after this product has been applied. Ensure all pool equipment is working properly. Backwash the filter system following manufacturers directions. Adjust pH between 7.2-7.6. Adjust chlorine residual to 1-3 ppm. In a chlorine treated pool, add stabilizer to establish a minimum level of 40-50 ppm to reduce the degradative effects of sunlight upon the chlorine residual. Check for metals and if present, add stain and scale inhibitor to prevent staining of pool surface due to metals. Check chlorine residual and adjust to 1-3 ppm. 1. Backwash the filter thoroughly. 2. Vacuum algae debris and thoroughly brush pool. 3. Add 5.2 oz. of this product per 10,000 gal. of water. 4. Vacuum pool after 24 hours to remove dead algae. 5. If algae are still visible, repeat steps 3 & 4 as necessary until pool is free of visible algae. 6. Once algae are under control, clean filter and return to normal operation. Maintenance Dose: Add 1.28 oz. of this product per 10,000 gal. of water every 3-5 days. If high temperatures prevail or pool has unusually heavy use, add maintenance dose more frequently. Booster dose: Add 1.28 oz. of this product per 10,000 gal. of water after a heavy or prolonged rainfall or when there is a heavy bathing load. The directions should be followed even when the pool is not in use. If algae growth is noticeable, apply initial dose.