Description
Natural Chemistry Spa Metal Free: Phosphate-Free Metal Protection for Your Spa
Natural Chemistry Spa Metal Free is a specialized metal chelating agent that prevents staining and water discoloration caused by trace metals like iron and copper in your spa water. Unlike many competing stain and scale products, this phosphate-free formula keeps your water chemistry balanced and your sanitizer working efficiently.
Key Features & Specifications
- Phosphate-free formula: Will not increase phosphate levels like many other metal control products
- Broad compatibility: Works with most sanitizing systems and all spa surfaces
- Metal chelation: Deactivates iron, copper, and other trace metals that cause staining
- Size: 1 Liter (33.9 oz)
Dosage & Application
- Initial dose: 1 capful (4 oz) per 400 gallons — add directly to spa water around the edge after filling or draining
- Weekly maintenance: 1 oz per 400 gallons (one-quarter of the large cap)
Important Compatibility Notes
Do not use with biguanide sanitizers. Do not add at the same time as cationic polymers found in clarifiers, flocculants, or polyquat algaecides — wait 24 hours between additions to avoid cloudy water or reduced effectiveness.
When to Use Spa Metal Free
If you notice discolored water, green or brown staining on spa surfaces, or if your water source contains high levels of iron or copper, Spa Metal Free helps prevent these metals from depositing on surfaces. Use it as part of your regular maintenance routine, especially after every drain and refill.
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