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Traditionally, sanitisers have been used to treat and control algae but this is proving to be much less reliable as algae species become more diverse and resistant. This leads us to the need for control agents designed specifically to counter the defense mechanisms algae has developed to protect itself. Even if we can’t see them, algae spores are always present and when they become active, they thrive on wastes in the water and dramatically multiply in numbers. It is important to control algae in swimming pools for health, safety and aesthetic reasons. An algae-infested swimming pool is also an expensive and frustrating problem to correct.

Back-Up® III

tn Back Up III 1LBioGuard® Back-Up® II is a copper-based algae inhibitor that works extremely well with chlorinating products to prevent a broad spectrum of algae growth.

Product Features:

  • 42g/L copper active present as copper sulphate.
  • Unique non-staining formulation.
  • Contains metal chelating agents.
  • Built-in water clarifiers help remove dead algae.
  • Easy to measure residual in the water.


  • Effective against all common and many mutant strains of algae.
  • Long-lasting algae prevention.
  • Faster removal of dead algae when used with Quick ClearTM.
  • Clearer pool water.
  • Negligible effect on water balance.


tn AlgiGuard 1LBioGuard® AlgiGuard® is a highly effective quat-based algaecide that works well with chlorinating products to prevent a wide variety of algae.

Product Features:

  • 400g/L benzalkonium chloride.
  • Non-staining formulation.
  • 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.

Polygard Concentrate™

PolygardBioGuard® Polygard™ is a non-foaming polyquat algae preventative and algaecide that is excellent for use in pools with attached spas, fountains, or jetted returns.

Product Features:

  • 460g/L polixetonium salts.
  • pH = 6.4.
  • Non-foaming.
  • Non-staining.
  • Effective on all algae types.
  • Works with chlorine or bromine.
  • Classified as a non-dangerous good.
  • Excellent for use in pools with attached spas or fountains.
  • Use to treat stubborn algae growth.
  • Negligible effect on water balance.
  • Storage and transport friendly.


tn MSA III 1LBioGuard® MSA™ II is a unique, patented, copperbased algaecide that works fast in curing most types of algae, including many mutant strains.

Product Features:

  • 40g/L copper active present as copper sulphate.
  • Will add between 0.4 and 0.7 ppm copper when properly applied.
  • Non-foaming.
  • Works in pools treated with chlorine or bromine.
  • Easy to measure residual in the water.



  • Rapidly kills off most types of algae.
  • Will not stain pool surfaces (unlike most copper
  • algaecides).
  • Fast removal of dead algae when used with
  • Quick Clear™.
  • Clearer pool water.

Contact Us

4 Main North Rd, Gawler SA 5118

P: 08 8522 3811

E: admin@gpss.com.au


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Shop Hours

Shop Hours :

March to September

Mon-Fri 9am-5.30pm, Sat 9am-12noon

October to February

Mon-Fri 8.30am-5.30pm, Sat 8.30am-1pm

Closed Sunday & Public Holidays.


Our service technicians cover most areas from Adelaides northern suburbs to the Barossa Valley and surrounding districts several times a week and are backed up by the best products and genuine spare parts.

Mission Statement

To provide a complete solution to meet your demand for the best quality and high value maintenance for your pool or spa.

Ray Pfeiffer