Algi Guard


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

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.