Check the listing for details. SCALEfree Scale and Metal Protection 2 L Natural Chemistry (17511NCM). Condition: New. Listed at 35.75 USD. SCALEfree protects your pool from the damaging effects of scale build-up and staining due to excessive calcium, iron, copper, and other minerals. It works without the use of phosphates and is free of harsh acids. SCALEfree also prevents scale from forming on salt generator cells, which helps maintain optimum performance and longer life on the cell. SCALEfree is compatible with all pool surfaces and compatible with most sanitizing systems.. Initial Dosage Instructions:Fresh Fill - 64 oz per 10,000 gallonsExisting Water - 32 oz per 10,000 gallons Maintenance Dosage Instructions:5 oz per 10,000 gallons Powered by Frooition Frooition | No-js Template | eBay design, eBay store design, eBay shop design, eBay template design, eBay listing design (ver:froo_no_js) This listing is currently undergoing maintenance, we apologise for any inconvenience caused.SCALEfree protects your pool from the damaging effects of scale build-up and staining due to excessive calcium, iron, copper, and other minerals. It works without the use of phosphates and is free of harsh acids. SCALEfree also prevents scale from forming on salt generator cells, which helps maintain optimum performance and longer life on the cell. SCALEfree is compatible with all pool surfaces and compatible with most sanitizing systems.. Initial Dosage Instructions:Fresh Fill - 64 oz per 10,000 gallonsExisting Water - 32 oz per 10,000 gallons Maintenance Dosage Instructions:5 oz per 10,000 gallons Powered by Frooition Frooition | No-js Template | eBay design, eBay store design, eBay shop design, eBay template design, eBay listing design (ver:froo_no_js) This listing is currently undergoing maintenance, we apologise for any inconvenience caused.