Check the listing for details. Earth Science Pristine Clean (8oz) (2 Pack). Condition: New. Listed at 29.98 USD. Earth Science Pristine Clean 8oz - 2 Pack Pristine Clean prevents metal staining in pools and hot tubs. Pristine Clean prevents the metals that enter your pool or spa through hoses, jewelry and metal equipment from attaching to the walls and leaving unsightly stains. This product also has been know to lighten and remove existing metal stains. Product Dosage For Pools: 2 ounces per 10,000 gallons of water every 2 weeks. For Spas: 1 milliliter per 100 gallons of water every 2 weeks. Directions For spas and hot tubs apply at a rate of 1 milliliter of Pristine Clean per 100 gallons of water every 2 weeks. For pools, apply at a rate of 2 ounces of Pristine Clean per 10,000 gallons of water every 2 weeks. Returns are not accepted on opened or used products and are subject to a 10% restocking fee An RMA/RGA is required to return any item Buyer pays all return shipping If you have any questions, please contact Clearview Fireplace and Patio We would be happy to help