United Chemical PST-C12 Pool Stain Treat – 2 lb Sequestrant & Chelator (2-Pack)

United Chemical PST-C12 Pool Stain Treat is a dual action formula designed to support pool water maintenance. This product arrives as a two pack with two 2-lb containers, offering a practical solution for ongoing care of pool surfaces and water clarity.

What PST-C12 Does

As a sequestrant, PST-C12 helps keep metal ions like iron, copper, and calcium in solution, reducing the likelihood of reactions that can cause staining on plaster, tile, or vinyl surfaces. As a chelator, it stabilizes these metals so they stay dispersed in the water instead of settling as deposits. Together, these actions aim to minimize unsightly marks and help protect interior surfaces and equipment from mineral buildup.

• Metal management in pool water to reduce staining potential
• Stain prevention on common pool surfaces
• Support for clearer water and easier routine maintenance
• Two 2-lb containers in a convenient 2-pack for regular use

Real World Use and Benefits

In everyday pool care, PST-C12 can be part of a balanced maintenance routine. It may be beneficial after weather changes, heavy use, or source water changes that introduce metals into the pool. While results vary with chemistry, many pool owners notice easier cleaning and a more consistent water appearance when combined with standard maintenance practices.

• Apply as part of regular balance checks and chemical routines
• Pour into the water via skimmer or recirculation line after brushing or cleaning
• Follow up with water testing and any necessary adjustments to other chemicals
• Store in a cool, dry place and keep out of reach of children

Usage Notes

This product is designed to work with typical pool care programs and is not a substitute for routine testing and balancing. The two pack provides steady supply for ongoing maintenance, helping you manage metals and staining as part of a broader care plan.