How to Prevent Swimming Pool Algae Growth?

Many face the problem of eradicating the growth of swimming pool algae as it causes various problems. One of the most common problems is that no one desires to swim in the unhygienic water. Also, to get rid of the swimming pool algae completely, it requires money, effort and lot of work. Hence, it is recommended to use certain preventative measures and chemicals. These aids effectively prevents swimming pool algae growth. Read on to know

how to prevent swimming pool algae growth


Algal blooms can cause several problems. They color and cloud the water body, which makes the rescue operations difficult as it reduces the diver’s depth perception. On its own, algae is not harmful for swimmers. Although, algae may promote the growth of pathogens such as E. colis bacteria. Apart from obstructing the sanitation pathways in water, algae can also obstruct the pores located in a filter. This minimizes the effectiveness of the filtration systems as it requires more medium replacement or backwashing.

Preventing Swimming Pool Algae Growth

One can prevent the growth of swimming pool algae by using chemicals like algaecides and algaestats. These chemicals include:

1. Quaternary Ammonium Compounds

This is a low grade chemical which is known as ‘Quats’. They contain 10% of the active ingredient. The best advantage is that they are relatively cheaper, although they produce surface foaming on the water. Most effective as an algaestat (not a cure but a preventive measure)

2. Polymers

These are complicated, long chemical chains that work as as algaecide as well as algaestat in water. They have the percentage strength of 30-60%. Also, they do not produce any foam. The combination of quats and polymers is known as Poly-Quats.

3. Copper Based

Copper is well-known as an algaestat and an algaecide. This is available in strength of 3 to 10% and do not form any foam. This chemical works well against all forms of algae. But one of the drawbacks is that it stains white plaster surface if it precipitates from the solution. It stains the surface blue/green color.

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