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Algae Killing and Prevention

Prevent algae before it becomes an issue

The addition of algaecide is needed for proper pool maintenance. Sanitizers or shock/oxidizers alone may not keep algae at bay and this step is needed to keep your pool completely clear of any visible growth. This is the third part of the BioGuard 3-Step Pool Care System and the BioGuard Smart PAK program.

Do all algaecides kill algae?

Not all algaecides are alike, only algaecides that have been approved by the PMRA for killing algae actually perform. All BioGuard products have been thoroughly reviewed and proven effective. Various kinds of algae require different treatments to ensure they are eliminated.

Prevent algae from appearing with routine weekly maintenance


  • BioGuard’s best preventative algaecide
  • Works in all swimming pool types

Back Up®

  • Non-staining formula prevents a wide variety of algae
  • Powerful wetting agent and surfactant help it work into cracks and crevices
  • Keeps your pool protected while you’re on vacation, just add an extra dosage


  • Excellent for use with pools with attached spas or fountains
  • Works in chlorinated or brominated pools
  • Prevents all types of algae

To kill algae once it has appeared in your pool


  • BioGuard’s best formula, highly effective, kills ALL types of algae
  • Fast-acting
  • Suitable for all surface types