CLOROX Pool&Spa Swimming Pool Scale & Metal Stain Control, 1 Quart — Prevents Scale, Removes Iron/Copper Stains

Clorox Pool&Spa Swimming Pool Scale, Metal & Stain Control is a liquid treatment that prevents scale build-up and removes metal stains like iron and copper to keep pool surfaces and equipment clear.

Keep your pool surfaces and equipment looking their best with a targeted formula designed to combat metal discoloration and mineral deposits. This one-quart bottle from Clorox Pool&Spa is formulated for regular maintenance and spot treatment, working in pools experiencing hard water, metal carryover, or new stains. Use it as part of a routine water-care plan alongside regular testing and sanitizer maintenance.

How does this product prevent scale and metal staining?

The formula binds dissolved metals and interferes with mineral precipitation so they don’t adhere to plaster, tile, or liners. When applied according to directions, it reduces the chance of visible stains forming and slows scale accumulation on surfaces and equipment. It complements balanced water chemistry for best results.

• Sequesters iron, copper, and other metals to keep them in solution
• Helps inhibit calcium and mineral deposits that form scale
• Safe to use on common pool surfaces when dosage guidelines are followed

Can it remove existing metal stains and how quickly will I see results?

Fresh metal stains from iron and copper typically respond faster; treatment time varies with stain age and water conditions. For recent stains you may see visible improvement within days; older or deep-set stains can require repeat applications and brushing. Persistent discoloration may need spot treatments plus ongoing sequestering to prevent recurrence.

• Effective on fresh iron and copper stains with repeated application if needed
• Combine with brushing and filtration to accelerate removal
• Follow label instructions for dosage and wait times to avoid overuse

How do I use it safely and what pool types is it suitable for?

Always test pool water and follow the label for exact dosing and safety precautions. This product is formulated for use in concrete/plaster, tile, and vinyl-lined pools; avoid contact with swimmers until recommended circulation and dilution times are met. Wear protective gloves and eye protection when handling concentrated product.

• Measure pool volume and apply dose per label directions
• Run circulation system after application to distribute treatment
• Delay swimming until recommended dilution and circulation are complete

How does this fit into weekly pool maintenance?

Use it proactively when water tests show metals or hard-water tendencies, or reactively when stains appear. Incorporate it with sanitizer, pH, alkalinity, and calcium hardness checks to maintain balanced water and minimize treatment frequency. The Clorox Pool app can help with test guidance and dose calculations for your pool size.

• Test water regularly for metals and hardness before adding chemistry
• Treat at first sign of staining to simplify removal
• Use the Clorox Pool app for personalized dosing recommendations

Who is this for: Pool owners and service professionals who want a straightforward, targeted product to control metals and mineral scale. It’s suitable for residential and light-commercial pools with hard water or recurring metal staining issues, and for anyone who prefers combining preventive maintenance with spot treatments to preserve pool finishes and prolong equipment life.