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BioGuard Back Up® 2 - Algae Inhibitor

BioGuard Back Up® 2 - Algae Inhibitor

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BioGuard's Back Up® 2 Algae inhibitor is extremely effective at preventing all types of algae from gaining access to your pool.

  • Powerful wetting agents stop algae where it starts
  • Use as Step 3 in the BioGuard 3-Step Care System
  • For use with above and in ground pools
  • Use once a week

BioGuard Back Up® 2 has no risk of staining, does not affect pH and is completely stable in sunlight removing any concern of evaporation or deterioration. The powerful wetting agents in this product help get into the smallest nooks and crevices of your pools surface, stopping algae before it can get started.


Always follow label instructions, dosages are provided here to inform your purchase decisions. These dosages are not meant as a replacement for label instructions.

Initial Application: 6oz per 10,000 gallons of water.

Maintenance Application: 1.5oz per 10,000 gallons of water every 5-7 days and after heavy rain/refills.

Visible Algae: 13.5oz per 10,000 gallons of water. Repeat after 24 hours as necessary.