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Pro Poly Guard Scale and Rust Preventer - 3 LB

Part Number: GP63N
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Poly-Guard Crystals are perfect for preventing hard water scale and iron build-up in water systems, equipment and appliances by forming a protective coating on the surface areas with continual exposure to water. Poly Guard is released through the Pro Poly Guard Cartridge, GP10C-ITEM linked HERE.

How to use the Poly Guard Scale and Rust Crystals
  • Transfer 1.5 pounds of crystals into the Pro Poly Guard Cartridge
  • Preventing hard water scale, the crystals in the cartridge should be replaced every 30,000 gallons / 6 months to ensure product efficiency 
  • When your Pro Poly Guard Cartridge runs out, don't buy a new one- simply refill the cartridge with the Pro Poly Guard Crystals and reinstall the cartridge
  • NSF 60 certified for drinking water
  • Used to refill the Pro Poly Guard Cartridge
  • 3 LB container that will treat up to 60,000 gallons of hard water

California residents Prop 65 Warning
This product contains materials known to the State of California to cause cancer and birth defects or other reproductive harm. www.p65warnings.ca.gov
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