Principle

The water is treated mechanically by filtering system is sparkling but not pure.

In order to guarantee a quality water, the water needs to reach sanitary conditions.  It is necessary to destroy the bacteries, fungus, algae… potentially in the water.

You need to additionnally oxydize the desinfection residues and the body materials brouht by the swimmers (sweat, skin, hair…) and environnement.

The water should be sanitized and sanitizing.

It is necessary to use the chemical oxydizing products to destroy germs and bacteries and sterilize the water.

Water chemical : PH regulation

For perfect sanitizing, it is necessary that the water is balanced.

If the water PH is superior to 7 or 8, the water is alcaline or basic, it becomes milky and the sanitzing products are not efficient.

If the PH water is below 7, the water is acid, it becomes corrosive, and the metallic substances are disolved in the water instead of being filtered. Some pool parts can be damaged.

The Ph level can be raised by additing carbonate of soda, caustic soda (never pour directly into the water)

The Ph level can be lowered by adding some niter cake directly in the water or with hydrocloric or sulfuric acid taking care of conditions of use.

The algae appears when the PH is too high, an algaecid can be used.

No matter the water treatment, you always need to check their use is suitable with the filtration system used for the pool.

Various type of water treatment

You will find on the market several types of water treatment. It is strongly advised to contact a pool dealer in order to choose the most suitable product for your pool. Some automatic systems can be fitted to limitate your intervention. It is necessary to check permanently the water quality and treat it regularly. Some professional can take care of your pool care.

Chlorine

It is the most commun used, it is mainly sold in granules or blocs. It should be handled with care. It is necessary not to put direcly the blocs into the skimmer basket (close to children especially), it is better to use a chemical feeder.

Salt electrolysis

This system is automatic and avoids handling of the clorine. In this case, the chlorine is produce continuously with the salted pool water (3 to 4 g per liter, salinity level identical to saliva or tear drops). It is not as concentrated and the system benefits from an automatic regulation.

By electrochemical process, the salt (sodium chlorine) is converted into sanitizing (chlorine).

Bromine

This product is extracted from sea salt water, its action can be compared to chlorine. It remains active when the pH is high (up to 8) and in hot waters (spas). Main advantage : ideal for people allergic to chlorine.

Ultraviolets rays

This treatment is not chemical. It is realized by  bacterial action, algaecide and fungicide by strong ultraviolet rays. This operation is perfomed in an stainless steel chamber or in UV resistant material.

PHMB

The  PHMB (Polymère d'Hexa Méthylène Biguadine) is issued from a strong desinfectant used in the medical sector. It does not contain any chlorine but requires some handling care as it can eventually damage some parts of your pool especially products made in polycarbonate.

Other products exist on the market, no matter the product you choose, the treatment you chose is necessary for your pool water as the filtration is not sufficient. You need to check imperatively the pH of your pool water in order to be sure that your water treatment is reliable.