Natural Chemistry Stain Free Extra Strength | 1.75 lb

Stainfree Extra Strength is a premium stain fighter that contains 100% ascorbic acid. It quickly removes metal staining without adding phosphates to your water. It is ideal for treating staining on all pool surfaces. Use with Natural Chemistry's Metalfree™ and you have the ultimate 1-2 combination for stain fighting!

• 100% ascorbic acid- premium stain fighter!
• Safely removes metal stains from pool liners and finishes
• Quickly removes stubborn stains
• Compatible with all sanitizing systems