This MAREVA Mustard Algae Treatment for Infected Pools - 3 kg - 1500841 will enable you to eradicate mustard algae from your pool. A real nightmare for pool owners, these yellow mustard algae composed of infected dust from the Sahara winds are particularly hard to detect, moving at the slightest movement, and to treat. This purifier will get rid of these tough algae. First of all, it is advisable to check the pH of your pool, which should be between 7.2 and 7.4. Next, an intensive pre-cleaning should be carried out to remove the algae germs clinging to the walls; this is a crucial step for the treatment to be effective. It will then be necessary to apply this fungicidal anti-algae product, combined with an oxidizing shock treatment and a clarifier at the end to have hygienic water. Thus, it is strongly recommended to combine Revatop 12% + Top 3. (sold on our site) It is advisable to carry out the treatment a second time for optimal cleaning, and a third time as a preventive measure. For the regions most exposed to the wind are more subject to this type of pollution, it is advisable after treatment to make regular preventive treatments to avoid that it does not return again and again, at a rate of 2 times per season. Please also note that it is important to clean all the material that has come into contact with the pool water (toys, inflatables...) to remove all the germs. Advantages: Ultra powerful purifying action Removes all mustard algae, even the toughest and most resistant Also suitable for preventive treatments, sufficient dose Features: 3 kg mustard algae treatment Bucket Biocidal products should be used with care. Keep out of reach of children. Before use, read the label and our safety data sheet for the product, which you can download below. Packaging : MAREVA Mustard Algae Treatment for Infected Pools - 3 kg - 1500841Delivered in its original packaging