Traditionally, sanitizers 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 defence 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.


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.

AlgiGuard is a great maintenance algecide especially if you are battling a problem pool, or constant algae issues.

MSA Extreme

BioGuard MSA Extreme is a patented, non-staining, highly concentrated copper-based algaecide powerful enough to kill all types of algae in swimming pools.

It is formulated to insure against instances of ‘green hair’, water discolouration and pool surface staining so often encountered with copper-based algaecides.

Algi Destroyer

BioGuard Algi Destroyer is an effective destroyer of stubborn algae infestations, especially green and black spot algae. By combining two active ingredients into one formula, a double action attack eradicates algae swiftly and successfully. Being a non-metal algaecide, Algi Destroyer is ideal for use with vinyl-lined pools or fibreglass pools.

Black Spot Algae Killer

Concentrated Black Spot Algae Killer is a combination of the organo copper complex contained in Lo-Chlor Pool Algaecide together with the proven agent, Alkyl Dimethyl Benzyl Ammonium Chloride. Both are very effective anti-algae treatments. Combined they will overcome the most resistant of algae strains. As the compound suggests this blend contains ammonia. When added to a pool running with a salt chlorinator the ammonia occasionally reacts with the gases produced in the salt chlorinator cell causing fine bubbles to form on the surface of the pool. These bubbles will dissipate as soon as the chlorinator is switched off and usually only last 5-7 days.

Note: High doses of quaternary ammonium compound may combine with free chlorine, resulting in excess levels of combined chlorine. This phenomenon lasts 2 or 3 days. Addition of Lo-Chlor Aqua-Boost is recommended if condition persists.