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Product Features:

  • 40% w/v quaternary ammonium based algaecide.

  • 75% w/v of quat is C-14 (95% Carbon 14 in one chain).

  • Highly effective broad spectrum algae preventative.

  • Complements chlorine in pool care.

  • Powerful surfactant / wetting agent.

  • Stable in sunlight & will not evaporate.

  • Works in all pH ranges.

  • pH neutral.

  • Activity increases as water temperature rises.

  • Concentrated.

  • Non Staining.

  • 90 mL per 10,000 litres yields minimum of 4 ppm quat level.


  • Highly effective concentrated formula prevents wide variety of algae growth.

  • Also effective as a duck deterrent and floating/swimming insect killer.

Application Instructions:

  1. Clean filter and adjust water balance.

  2. Adjust free chlorine residual to 1.5 - 3.0 ppm and establish minimum level of stabiliser of 30 - 50 ppm.

  3. Control metals, if present, using Pool Magnet according to label Instructions.

  4. Add AlgiGuard directly to the pool with the pump running.

    Initial Application: Apply 90 mL per 10,000 litres to establish a 4 ppm quat level in the pool.
    Maintenance Dose: Apply 15 mL per 10,000 litres every week.
    After Heavy Rain: Apply 15 mL per 10,000 litres.
    Vacation Treatment: (when away for one week or more) Add 30 mL per 10,000 litres for every week the pool will be unattended. Pour around the edges of the shallow end if shock is also being applied in the deep end.

Available Sizes:

  • 1-litre bottles

  • 5-litre jerries

NOTE: Avoid physical contact with product. Follow safety information on label Instructions. Store in a cool, dry place. Keep out of the reach of children.