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Algae invasion in the pool: advice from your expert

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Invasion des algues - bâche de protection piscine
Invasion des algues - bâche de protection piscine

If you don't take care of your pool during the winter by covering it with a pool cover, you risk paying a high price for maintenance when you reopen it in the spring. To avoid all kinds of inconvenience, there are a few tips and tricks that can save the day, especially in preventing algae proliferation.

Reasons for algae proliferation

The fight against impurities brought in by bathers is imperative, but other factors can also make a pool unusable, including dead leaves, fine dirt and algae. The latter grow quickly if you forget to cover your pool, especially in winter. The sun's UV rays penetrate directly into the water and encourage algae proliferation. Before ending up in your pool, they are transported along with dust through the atmosphere. On other points, forgetting to use a winterizing product encourages the development of algae and bacteria in a pool. The walls and water lines also need to be cleaned with suitable products, as their impurities contribute to the fixation of algae.

How to stop the spread of algae?

To prevent algae growth in your pool, the first thing to do is simply cover it with a pool cover. This brings darkness to the water and helps trap dust. To prevent the appearance of algae, you can also treat your pool with a disinfectant such as chlorinated water. Draining your pool is also a good way to stop the proliferation of algae. This involves replacing the pool water and thoroughly cleaning it at least three times a year. Finally, it's important to carry out a preventive treatment with a pool algaecide, a technique that avoids the much more complex curative fight against algae. Of course, chlorine has algicide properties, but it's advisable to complement its action with an anti-algae product.


Discover our selection of pool covers that will effectively stop algae growth.

Tips for keeping your pool in good condition

Regular pool maintenance can save you money. To do this, you need to follow a few simple cleaning instructions. Firstly, it should be systematically cleaned with chlorinated water. Algae cannot survive in a well-chlorinated, well-balanced pool with a well-distributed water circulation system. Secondly, pools exposed to the open air are the first targets of bacteria promoting the development of single or multi-cellular plants. If they are not quickly eliminated, they will provide a breeding ground for fungi in the water. Finally, for effective prevention, we recommend cleaning the skimmers and pre-filter to eliminate sources of contamination. It's also important to maintain the right level of disinfectant, and to flush the rinsing water down the drain.


In short, pool maintenance must be carried out regularly to prevent algae proliferation. To get started, all you need to do is chlorinate the water and use a pool cover when not in use.