Chlorine contained in pool water care chemicals effectively kills bacteria and eradicates organic substances contained in water. However, as in case of the majority disinfection chemicals, chlorine is unstable. It naturally occurs as gas and as such can be used in professional water treatment stations at public pools. For the safe use by private pool owners chlorine is combined with other substances to make it solid and easy to use. When a chlorine-based powder is dissolved in water, chlorine is released and the disinfection process starts. However, the greatest problem is that although chlorine is useful in water, the residue of other compounds is not. Thus, it is really worth to use good-quality chlorine-based chemicals.

Chlorine is naturally “used up” in the bacteria killing process or decomposed due to strong water exposure to the sun. Being unstable, chlorine should be stabilised if its water treatment effects are to persist.

Usually two kinds of chlorine products are offered. The first and most frequently used is a chemical combining chlorine and cyanuric acid, i.e. so-called stabiliser and offered as granules or tablets.
Cyanuric acid lengthens the life of chlorine in your pool water. What is crucial, however, is the fact that chlorine escapes from water after some time and the acid will persist. When another dosage of chemicals is added, there will be more and more acid in the water. The excess of the stabiliser is undesirable as chlorine is not freed then what results in inadequate water disinfection. A properly maintained pool would rarely if ever show any excess of the stabiliser. To avoid this, remember to ensure an inflow of fresh water (approx. 3% of the total pool volume a week). If the sand filter is regularly rinsed the flow will be guaranteed. Water can also be added directly to the pool.
Products containing so-called non-stabilised chlorine are another type of chlorine-based chemicals. This type of chlorine is used when shock disinfection is required. As it is very unstable soon after the disinfection water is to a considerable extent free of it. Chemicals of that kind contain chlorine and calcium that does not cause such problems as the stabiliser. Therefore, more and more people decide to use them instead of the former kind.

Similarly to the majority of disinfection chemicals, chlorine is unstable. As it naturally occurs as a gas it can be used in this form in professional water treatment stations at public pools. To ensure a safe use by private pool owners, chlorine is combined with other substances and, as a result of complicated processes, made solid in the from of easy-to-use powder or tablets. These additional substances have the greatest influence on the quality and effectiveness of chlorine products. Thus, it is really worth to use good-quality chlorine-based chemicals.