Check the listing for details. GLB Super Sequa-Sol 2lb. (Pack of 2). Condition: New. Listed at 72.99 USD. This concentrated granular formula is specially formulated to protect pool surfaces from minerals in the water. It is ideal for use with hard water because it helps neutralize small quantities of stain-producing minerals such as iron, copper, or manganese that occur. – Great for pool openings or when adding make-up water to the pool. – Compatible with chlorine, ozone, salt water and mineral sanitizing systems. - Pack of 2 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.