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How to clean a swimming pool. Guide 2025

Cómo limpiar una piscina.

Whether you have a pool at home, or you are responsible for keeping the pool in a community or a public place clean, you are interested in knowing how to clean a pool to leave it in perfect condition for bathers.

Having a swimming pool at home is a real luxury these days. You can swim whenever you want without anyone bothering you or invite your friends to a big party. That's great, but remember that pool water quickly gets dirty, thus becoming a hotbed of infections.

Therefore, knowing how to clean a pool It is vital to keep it in good condition before, during and after bathing.

Accessories for cleaning a pool

To do the cleaning, you will need several accessories. You will need a pool brush, a mesh net, a pool vacuum cleaner and a reagent kit , which will be used to analyze the pH and chlorine level of the water.

Pool cleaning products

There are certain specialized products to treat, clean and treat water . Depending on your needs, you can use granulated chlorine, sodium hypochlorite, insect eliminators, flocculant or a winterizing product , among others.

Some products that may interest you:

What we should take into account before cleaning the pool

To clean swimming pools, you have to take into account two aspects:

Pool full or empty

It is possible Clean the pool without emptying the water , as long as the water is not too green yet. To prevent it from turning that colour, what is known as winterisation is usually carried out, which is done at the end of the summer season and prevents it from turning that colour.

If the water is slightly green, you can use flocculant to balance the pH, but if it is too polluted, you should empty the pool. If the pool is empty, you should go directly to the steps of pool cleaning which you will see below in this same article.

To make the wintering, You need to clean the bottom, walls, skimmers and all accessories , which you should put away during the winter. The next step is to reduce the water level, which should always be below the skimmers.

After A product is added to prevent algae and other residues from forming . Finally, cover the pool with a cover to prevent insects and keep the water at a good temperature and free of infections. If you do not have a cover, you should clean the pool from time to time and check the pH and chlorine levels.

Water filtration systems

There is 4 types of water filtration systems in a pool. Its use will depend on the pool size and needs. Check the following filters before cleaning:

  • Cartridge filter: If you filter with cartridges, they must be in good condition, clean and changed when they are damaged.
  • Aqualoon Balls: Aqualoon filter balls should be clean and free of dirt. The good thing is that they can be washed in the washing machine at a low temperature and reused many times. When should they be replaced with new ones? They are replaced when they are no longer clean after being washed.
  • Sand filter: The sand filter is one of the most commonly used, but it must be in good condition. Sand filters only when it is not compacted and must be changed from time to time, as well as the filter (it lasts approximately 4 years). If it has not been used for a long time, you can use chemical products to restore it.
  • Diatomaceous earth filters: simply follow the backwash instructions.
  • Water pump: It should be cleaned at the beginning of each season, the cables should be checked and any damaged components should be repaired. Also, don't forget to clean the filter.
Pool cleaning products

Steps to clean the pool

To clean the pool, you must follow a series of very specific steps:

1 Clean the pool accessories

The first step in cleaning a pool is to clean its accessories. In addition to cleaning the filter and the water pump , clean the skimmers, the grids, the baskets, the spotlights, the nozzles, the overflow channel and the rest of the accessories.

2 Clean the walls and bottom of the pool

If you have not done the wintering, you will have to Clean the surface of the pool , i.e. the walls and the bottom. This is done with the pool empty and is as simple as applying the descaling cleaner with the help of the brush. Scrub and let it sit for a few minutes, then rinse with water to make it look like new.

As for the substance, It is usually cleaned with a pool cleaner , which can be either manual or automatic.

3 Products needed to leave the water in the right state

When the accessories and surface are ready, the pool needs to be filled. To keep it in good condition, you should use fast-dissolving chlorine . It is advisable to start adding it when the water is half full.

On the other hand, you will have to make a pool maintenance , to prevent the water from turning green. To do this, clean the skimmers and filters and prevent leaves and insects from accumulating in the water.

You should also perform some regular tests such as measuring pH (twice a week), alkalinity (once a week), free residual chlorine (daily), calcium hardness (once a week) and cyanuric acid stabilizer (twice a week).

After that, you will need to maintain the correct levels by regulating the pH, adjusting the chlorine levels and adding anti-scale and algaecides. approximately every two weeks.

4 Keep the pH at the correct levels during the summer

Pools must have a pH between 7.2 and 7.6. Too low or too high a level causes skin and eye irritation problems, so it must be treated. Use a pH meter and apply a pH raiser or reducer directly to the water as needed.

Other related articles on pool cleaning and maintenance:

Conclusions

As you have already seen, cleaning the pool is not a complex task, as long as you have the right accessories and materials. To do so, visit our online store, where you can find all the products for cleaning and maintaining pools and water that you need.

Don't forget Perform maintenance weekly and check the water pH regularly .

Finally, remember to winterize at the end of the season to avoid having to clean thoroughly.