Check the listing for details. Jack's Magic The Purple Stuff 32oz. Condition: New. Listed at 42.99 USD. The Purple Stuff (SALT SOLUTION) is the stain preventative of choice, and a must product for salt (chlorine) generator pools. Unlike traditional sequestering agents, The Purple Stuff works extremely well in high salt and high TDS pools. The Purple Stuff keeps silica in solution while greatly reducing the incidence of cell fouling (scaling) in salt (chlorine) generators.*For pools that have existing stains, the Stain ID Kit should be used to determine the appropriate products. Initial Dose: 1 quart per 10,000 gallonsMaintenance Dose: 6-8 ounces per 10,000 gallons weekly Aids in the prevention of metal stains and scale Meets the specific needs of salt and high TDS pools Safe for all pool finishes SHIPPING: We will do our best to ship your order based on the shipping method selected, however in some cases, your shipping method may need to be modified to meet shipping requirements based on the carrier. Our current carriers used are UPS, FedEx and USPS. Please contact us directly through the "Contact Seller" link if you need UPS, FedEx or USPS specifically for your order.