Chlorine compounds are effective sanitisers which kill harmful bacteria when used a at recommended minimum levels. However, chlorine at recommended levels is a very poor algicide as the cell membrane of all algae (especially wall based types) are very resistant to oxidation. Chlorine is present in pool water for short periods, often just a few hours in summer, and with wide fluctuations in the free chlorine level, algae can quickly take hold in untreated pools. 

Our specialised long-term algicides POOL BLOCKS and POOL DROPS Plus provide a constant low level of algicidal protection over many months and algae simply does not get a chance to grow or suddenly turn pools green. Chlorine can be lost in just a few hours due to changes in pH, bather load, UV light and temperature especially in home swimming pools. Our algicides ensure that all forms of algae are eliminated from the pool water, reducing the loss of expensive chlorine sanitiser to organic matter.     The First Step in Simple Pool Care

Chlorine compounds are effective sanitisers which kill harmful bacteria when used a at recommended minimum levels. However, chlorine at recommended levels is a very poor algicide as the cell membrane of all algae (especially wall based types) are very resistant to oxidation. Chlorine is present in pool water for short periods, often just a few hours in summer, and with wide fluctuations in the free chlorine level, algae can quickly take hold in untreated pools. 

Our specialised long-term algicides POOL BLOCKS and POOL DROPS Plus provide a constant low level of algicidal protection over many months and algae simply does not get a chance to grow or suddenly turn pools green. Chlorine can be lost in just a few hours due to changes in pH, bather load, UV light and temperature especially in home swimming pools. Our algicides ensure that all forms of algae are eliminated from the pool water, reducing the loss of expensive chlorine sanitiser to organic matter.