The right pH: there may be skin and eye irritation if the pH is high or if it is low. Chlorine disinfects the water and prevents it from becoming cloudy and causing algae to appear. A flocculant will help the filter clarify the water and keep it crystal clear. Taking good care of the filter will allow the chemical treatment to be more effective.
The heat has already arrived and with it the desire and even the need – of those who do not have the luck to live by the sea – to go to the pool. It is estimated that in Spain there are a million swimming pools , of which 6% are community pools.
The pool has been, more or less, abandoned for the rest of the year and now it’s time to get it ready. It is not just that the water seems clean, but that it is clean and adapted to our needs. Experts from the Fluidra company explain how to keep the pool water clean and in perfect condition.
Adjusting the pH
The first step to achieve a clean, clear and respectful water with the skin is to regulate the pH of the same. The correct value should be between 7.2 and 7.6 to ensure that the other measures applied work effectively.
If the pH of the water is too high , bathers could suffer skin and eye irritation, the effect of disinfectant products will decrease, calcareous encrustations will form and the waters will become cloudy. Conversely, if the pH value is too low, the risk of corrosion will increase, there will be deterioration of the vessel, and eye and skin irritation will also occur.
The water in our pool can become the ideal livelihood for a wide variety of microorganisms. The important thing is to keep the free chlorine residual between 0.5-1.0 ppm in the water so that it is disinfected and has disinfecting power. In this way, we will prevent the water from becoming cloudy and the appearance of algae.
To maintain a continuous process of disinfection during the entire bathing season there are several methods: chlorine tablets, a saline electrolysis device or with active oxygen . In case of any turbidity or algae problem, it is advisable to carry out a shock treatment with granular dichlor and to add liquid flocculant, in order to recover the good state of the water.
After applying the products, it is important to filter for a few hours, possibly brush the walls and floor of the pool , and wait 12-24 hours for all the impurities to precipitate, and by means of the cleaner carry all the precipitate directly to the drain without that goes through the filter. It is also important to remember that the addition of chemical products should always be done in the absence of bathers. Prevention of algae If we do not want the algae to roam freely in our pool, it is advisable to apply an algicide on a regular basis. The algae are an ideal growing element for fungi and bacteria . In addition, the solar radiation and heat of the summer favor its appearance.
The addition of the algicide must be accompanied by the presence of disinfectant, such as chlorine or bromine , in the water to achieve a synergistic effect of both products and increase the effectiveness of the algicide.
Turbidity may appear in a pool. The causes are due to high pH problems, poor filtration, counter-washes of ineffective filters and formation of algae, manifested in many cases by the presence of tiny particles suspended in the water. The addition of a flocculant makes the particles larger, so that the filter can retain them, and thus clarifies the water, also eliminating the oxidized metal ions that the filter alone is not able to retain.
Good care of the pool filter will allow the chemical treatment we apply to be more effective. With a dirty filter, the quality of the water worsens and the consumption of chemical products increases. In addition, germs multiply that then spread through the water.
To keep the filter clean we have to perform backwashing and clean and disinfect the sand once a year before the start of the bathing season . It is also important to descale the filter (several times a year depending on the hardness of the water). On the other hand, it is recommended that every 5 years (depending on the use and characteristics of the water) change the filter medium if it is silica sand.