Aqua Joe 5 Pack 40 Lb Fast Dissolving Pool Spa Salt Chlorine Generators, AJ-PS40Brand: Aqua Joe Color: White Features: Pool and spa salt for chlorine generators supports clear water and easy maintenance Fast dissolving formula works quickly for improved water balance and clarity Designed for pools and hot tubs using automatic chlorination systems Ideal for both new and existing water systems in spas or above ground pools Ample 40 pound bag raises salt level by 480 ppm per 10,000 gallons of pool water model number: 5 x AJ PS40