BioGuard Back-Up 2 (1 qt)



  • Non-staining formula prevents a wide variety of algae
  • Powerful wetting agent and surfactant help it work into cracks and crevices
  • Not appropriate for pools with attached spas or water features
  • Can be used with the BioGuard 3-Step Care System

Save! When you purchase 4 or more quarts of BioGuard Back-Up 2  and/or BioGuard Algae All 60.