BioGuard has products to kill, prevent and control algae infestations. Use them to avoid murky water, increased chlorine demand and clogged filters. Let your BioGuard Dealer recommend the product that best suits your pool situation.  

      Algae Killer

A very effective, quick acting, green and black algae destroyer. For best results use in conjunction with BioGuard® Burn Out.


  • Kills a wide range of algae species
  • Fast Acting
  • Highly effective
  • Won’t kill grass or shrubs
  • Won’t stain surfaces

   MSA II Algaecide

MSA II is the newest and most effective rival against all types of swimming pool algae.

BioGuard® MSA II is a patented, non-staining pool algaecide, which is specially formulated for use in all types of swimming pools.


  • Kills a wide range of algae
  • Fast Acting
  • Highly effective
  • Effectively kills mustard algae
  • Protection against staining
  • Concentrated algaecide

   Algi Shield

Combined algaecide and water clarifier


  • For mild algae problems
  • Ideal monthly preventative algaecide
  • Non-Foaming, excellent for pools with spa jets, fountains and waterfalls
  • Built-in clarifier for sparkling water and improved filtering
  • 1 bottle treats up to 50 000 litres

Back Up® – Prevent Algae Before It Starts!

An excellent algae inhibitor! Formulated to complement swimming pool water being treated with normal sanitizer systems. Strongest algae protection available. Becomes more effective as pool water gets warmer.


  • Prevents a wide species of algae
  • Economical
  • Lasts Longer
  • Maintains efficiency
  • Effective in summer heat
  • Works where algae accumulates
  • Wont stain surfaces