Defence 490ml

Regular price $40.30
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BioGuard SPA Defence prevents staining and water discolouration from metals, and scale build-up from excessive calcium.

  • 133g/L organic phosphonates
  • Prevents calcium and magnesium ions present in ‘hard’ water from precipitating out of solution
  • Helps to prevent staining from metals like copper, iron and manganese


  • Prevents scale build-up
  • Helps keep spa water clear
  • Removes some fresh metal stains
  • Protects spa surfaces