Natural Chemistry Stain Free – 1.75 lb, 100% Citric Acid Stain Remover for Metal Stains on All Pool Surfaces

Natural Chemistry Stain Free: a natural approach to pool stain removal

Stain Free is an all-natural stain remover powered by 100% ascorbic acid, the family of vitamin C. It targets metal stains that appear on vinyl pool liners and fiberglass surfaces, helping restore color and clarity without harsh chemicals. The formula is designed with practical pool care in mind, offering a safer alternative for households while keeping maintenance routines straightforward.

One standout benefit is that Stain Free does not leave residual phosphates in your pool water. This aligns with Natural Chemistry's PHOSfree program, helping support your water care strategy without introducing phosphate byproducts. The product is gentle to users and compatible with your existing sanitizing setup, making it a flexible option for a range of pools.

Key benefits at a glance

• All-natural stain remover based on citric acid for metal stains on pool surfaces
• 100% citric acid formulation helps lift stains without phosphates
• Compatible with vinyl liners and fiberglass surfaces and works with any sanitizing system
• Phosphate-free residuals support a broader water care approach
• Safe, people-friendly alternative to harsher chemical stain removers

How Stain Free works and where to use it

The product uses ascorbic acid to target and soften metal stains, which often originate from metals in fill water, equipment, or pool components. It is effective across all pool surface types and is designed to integrate smoothly with existing sanitizers, helping you keep surfaces looking even and clean.

Practical use cases include staining on vinyl liners where color variation or spotting may occur, and on fiberglass surfaces showing mild discoloration. The approach emphasizes ease of use: apply, allow brief contact time, rinse, and assess the result. Regular use as part of routine maintenance can help maintain a consistent appearance over time.

What you can expect in practice

• Visible improvement in metal stain appearance over time with regular use
• Restored color and uniformity without phosphates lingering in water
• Seamless compatibility with most sanitizing systems for flexible maintenance
• Supports a natural pond- or pool-care approach when used alongside PHOSfree programs

Usage tips and safety notes

Follow the product directions for dosing and contact time. Wear protective gloves if handling concentrate and rinse thoroughly after treatment. Store in a cool, dry place away from children and pets. For best results, pair Stain Free with regular water care checks and periodic stain assessments.