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ÉCONOMISEZ 10% SUR VOTRE PROCHAINE COMMANDE AVEC LE CODE CLEARWATER2024 - VALABLE JUSQU'AU 7 MAI ✨
ÉCONOMISEZ 10% SUR VOTRE PROCHAINE COMMANDE AVEC LE CODE CLEARWATER2024 - VALABLE JUSQU'AU 7 MAI ✨
Comment traiter l’eau verte dans une piscine?

How to deal with green water in a swimming pool?

How to deal with green water in a swimming pool? If there is one thing that is unpleasant for a pool owner, it is green water. We all dream of clear water for our swimming pool. Here are some tips for keeping the water in your pool clear and treating green water.

The pool water is green, what should I do? How to quickly treat this water? You have just removed the cover from your swimming pool and you find that the water is green.

Green water in a swimming pool is often due to a proliferation of algae suspended in the water. Sometimes the water may look green but it may be biofilm clinging to the liner. To check that it is indeed algae suspended in the water, we advise you to take water in a very transparent glass of water and check the color of the water.

How to deal with green water in a swimming pool? Do you regularly test your pool? I advise you to start by carrying out an analysis of the pH level. You can use rigottes or drop tests (more precise).

This proliferation of green algae is due to a chemical imbalance in the water. If the water is sufficiently balanced in chlorine, or if the parameters in your ecological pool are correct and the UV lamp is in good working order, the water should be crystal clear. When the pH and the chlorine level (disinfection in the water) are correct, algae will have a hard time forming.

How do algae grow in water? With photosynthesis (swimming pool exposed to the sun), with airborne algae spores, organic waste such as leaves, sunscreen, perspiration, oils, etc., carried by the wind and introduced into the swimming pool.

When the pH of your pool is too high, the level of free chlorine also becomes very low. The pool also consumes more chlorine. Be careful not to exceed a pH of 7.6 in your pool.

If you have an ecological swimming pool, above all do not use chlorine but favor the installation of a UV lamp and aquatic plants to eliminate green algae. You can also seek the advice of an ecological pool specialist.

Did you know that algae grow much less when the pH is below 7.8? Be careful not to go too low in pH. To reduce the pH in a chlorine pool or a natural pool, you can use pH-. You can find this product here or in most shops specializing in natural swimming pools.

Once the pH level is correct (between 7 and 7.6), you can treat suspended algae in your pool by applying a chlorine treatment which will be much more effective.

Do you have any details to add to our guide on how to solve green water in a swimming pool? Comment on this guide, we will be happy to add your stone to the building by citing our sources :-) You may have elements to add or correct. Yes It is a free and open-source portal.

Can we quickly catch up with green water? Yes, with shock chlorine treatment. If you can see the first 20CM below the surface, we can catch up with this water in a few days.

In the case of a chlorine pool:

  1. Water analysis
  2. Balance pH
  3. Balancing the Chlorine Level
  4. If chlorine shock level too low
  5. Filter cleaning
  6. Flocculant if necessary

In the case of an ecological swimming pool:

  1. Water analysis
  2. Balance the water
  3. Balance GH and KH
  4. Check the UV lamp
  5. Possibly use a product
  6. Seek expert advice
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