BioGuard AlgiGuard is a highly effective quat-based algaecide that lowers surface tension to help repel ducks and insects. It also works well with chlorinating products to prevent a wide variety of algae.

Product Features

  • 400g/L benzalkonium chloride.
  • Powerful wetting agent.
  • Stable in sunlight and will not evaporate.


  • Prevents wide spectrum of algae growth.
  • Also effective as a duck deterrent and floating/swimming insect killer.
  • Negligible effect on water balance.

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