Remove Metal Stains Without Draining Your Pool

Metal stains can make an otherwise clean pool look old and neglected. Natural Chemistry Stain Free is a proven ascorbic acid pool stain remover designed to safely lift and remove iron, copper, and other metal stains from pool surfaces without draining the water. This treatment works at the molecular level to release metal staining from plaster, vinyl, and fiberglass surfaces, restoring a clean, uniform appearance.

Stain Free is widely used by pool professionals for corrective stain removal and is trusted for its effectiveness and surface-safe formulation.

Ascorbic Acid Formula for Targeted Metal Stain Removal

Unlike abrasive cleaners or harsh acids, Natural Chemistry Stain Free uses ascorbic acid (vitamin C) to neutralize and dissolve metal staining without damaging pool finishes. The fast-acting formula begins working shortly after application, making it ideal for treating visible stains caused by well water, metal-based algaecides, or corrosion.

This 1 lb container is suitable for residential pools and spot treatments or full-pool stain removal procedures.

Why Treating Pool Stains Properly Matters

Metal stains are not just cosmetic. If untreated, they can reappear repeatedly and worsen over time.

Why it matters:

• Removes iron and copper stains safely

• Restores original pool surface appearance

• Prevents repeated staining cycles

• Avoids aggressive acid washing

Safe for Common Pool Surfaces

Natural Chemistry Stain Free is compatible with:

• Plaster pools

• Vinyl liner pools

• Fiberglass pools

When used as directed, it will not etch, bleach, or damage pool finishes. Proper water balance before and after treatment is critical for best results.

Application Notes

Lower chlorine levels before application and circulate the pool according to label instructions. Add Natural Chemistry Stain Free directly to stained areas or broadcast across the pool for widespread staining. After treatment, follow up with a quality metal sequestrant to keep metals in suspension and prevent restaining.

Always test and rebalance water chemistry after treatment.

Product Specifications

Buy with Confidence from Benchmark Pool Supply

When you purchase Natural Chemistry Stain Free from Benchmark Pool Supply, you’re buying a trusted stain removal solution backed by local expertise. We help pool owners and service professionals choose the correct treatment and follow-up products to prevent stains from returning.

Our Fresno team is available to help you identify stain types and proper treatment steps.