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Internet # 306730123

Model # RR1-2.5

Store SKU # 1003566699

320 oz. Stain Preventer v Rid O' Rust

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  • Minimizes rust stains from well water
  • Works with water with pH of 6 or higher
  • Treats approximately 625,000 Gal. of water
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Product Details

Rid O' Rust RR1 2X Strength Rust Preventer, 2.5 Gal. bottle. Use Rid O' Rust RR1 to prevent UGLY rust stains caused by irrigation well water. Apply the formula through American Hydro Systems injection or siphoning system to prevent sprinkler stains from well water forever. RR1 is used for water with a pH of 6 or greater and any hardness level. 1/2 Gal. (64 oz.) of RR1 will treat 125,000 Gal. of water with 1 ppm iron. Keep the rust and iron staining off all your outdoor surfaces using Rid O Rust preventers. Rid O Rust has been a trusted brand for rust prevention for over 25-years.
  • 2X formula is twice as strong as original rid O' rust formulas
  • Prevents ugly rust stains and scaling from irrigation well water
  • Use in place of Rid O' Rust Formula 500 and Formula 2000
  • No.1 selling rust preventer in the US
  • Ready to use formula
  • Return Policy

Additional Resources

From the Manufacturer



Product Size: 320 OZ-Ounce


Product Size320 OZ-Ounce


Concentrated or Ready to UseConcentratedFeaturesNo Additional Features
Helps RemoveRustPack Size1
Product FormLiquidRecommended SurfacesConcrete, Laminate, Limestone, Metal, Plastic, Stainless Steel, Stone

Warranty / Certifications

Certifications and ListingsNo Certifications or ListingsManufacturer Warranty1 Year

Questions & Answers

Q:Is this the RR1 formula?
by|Jul 5, 2023
1 Answer
Answer This Question

A:  Thank you for your question. The 320 ounce is the RR1-2.5 gallon container. The RR1 is the 64 ounce container.

by|Jul 5, 2023
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    Customer Reviews

    4.7 out of 5
    • 4.7
      out of 13 reviews
    • 100% recommend this product
    Filter by:
    Showing 1-10 of 13 reviews
    we used this product for a year and find it removes some of the rust, but does not hurt our plants.
      • Verified Purchase
      I have used this product several times previously. Rid O Rust does exactly what it says it’ll do. Home Depot has the best price on this product and delivery was right on time.
      • Verified Purchase
      The product does good minimizing the increase in rust stains but does not work on removing rust stains already there.
      • Verified Purchase
      Works extremely well.
      • Verified Purchase
      The mix rate can be a challenge to figure out,...
      The mix rate can be a challenge to figure out, but the staining is much more manageable than it would be without it.
      • Verified Purchase
      • Verified Purchase
      • Verified Purchase
      Rating provided by a verified purchaser...
      Rating provided by a verified purchaser
        We have a ridorust siphoning treatment system for our lawn...
        We have a ridorust siphoning treatment system for our lawn sprinkler. This product does an amazing job preventing discolorization to our concrete and plants. We have a high iron content to our untreated outdoor water. We couldn't run our sprinkler without it!
        • Verified Purchase
        Showing 1-10 of 13 reviews