- 100% industrial ascorbic acid quickly removes stubborn metal stains from swimming pools.
- Removes metal staining on pool liners and finishes - works great on steps, too!
- Use with Natural Chemistry’s Metal Free for the ultimate 1-2 combination for stain fighting.
- Stain Free Extra-Strength is a premium stain fighter that removes metal staining without adding phosphates to your pool water.
- 100% compatible with all sanitizing systems.
Natural Chemistry Stain Free Extra Strength, 1.75lbs.