BEST VALUE – 1 Use Per 10,000 Gallons of Water (2 Uses Per Container, 2 Containers Included), Our 2 Pound Engineered Powder (2PK) Can’t Be Beat On Price! We Have Developed a Natural Fast Acting Remedy to Eliminate Stains for Pools, Spa’s & Even Hot Tubs. One Bottle Will Work Up To 20,000 GAL Of Water! SAFE, NATURAL & HIGHLY EFFECTIVE – NO HARSH CHEMICALS, Stay Confident In Your Pool Knowing That Our Pool Stain Remover Does Not Use Any Harsh Chemicals. We Bring Convenience Back To Standard Maintenance, Our Special Natural Formula Does Not Alter Chemical Balances EASY TO APPLY – Citric Acid Base, Compatible With All Sanitizing Systems, Works Perfect On Vinyl Liners, Fiberglass & Even Metal Surfaces. Simply Follow Our Instructions Based On Your Needs – Fights Both Specific Stained Areas & Problematic Water Discoloration LIKE NEW FINISH – Impress Your Neighbors And Friends Alike With Your Like-New Appearance Of Your Aged Swimming Pool! Improves Surface Quality Appearances & Deeply Penetrates Long Lasting Stubborn Stains With Ease PROUDLY MADE IN THE USA! – We Believe In Quality, That’s Why We Have Engineered, Tested And Manufactured, Our Pool & Spa Stain Remover Right Here In The USA. We Stand By All Our Products, Essential Values Ensures Best Quality, Or Your Money Back!