To make sure the water in the pool is crystal clear and clean, it needs to be chemically treated for:
Cleaning and vacuuming
Grease detergents that effectively remove dirt at the waterline and the removal of dirt, leaves, etc.
Disinfecting agents work at their best within a narrow range of pH. The water must be neither too acid nor too basic. The ideal pH range for the pool and the human body is between 7.2 and 7.6.
The pool water is disinfected with chlorine to eliminate organisms such as bacteria, algae and fungi. Pool chemicals “burn out” impurities and make the water
glistening and healthy.
Flocculants are clarifying agents used to gather suspended particles that sink to the bottom of the pool and are removed by filtration via the sand filter.
Anti-algals prevent the algae from getting established and multiplying in the pool. Algae that have already become established need to be removed with an extra-high dose of chlorine (shock chlorination). With regular chlorination, there is normally no need for anti-algal treatment.