Has your pool water turned green due to the presence of algae? MAREVA -1L - 150090U is the solution to your problem as it will allow you to eliminate the phosphates and therefore the algae present in your pool. This product can be used as a preventive treatment (20 ml for 10 m3) but you can also use it as a curative treatment (initial dosage with 100 ml for 10 m3). After 24 hours of filtration, reduce the dosage to 50 ml per 10 m3 if the phosphate concentration is still high. In the case of very green water, pre-treat with REVATOP 12%. MAREVA specializes in the manufacture and design of treatment products and equipment for in-ground pools, above-ground pools, self-supporting pools and public pools. Today, it is one of the European leaders in pool treatment products and the second largest producer of P.H.M.B (PolyHexaMethyleneBiguanide), a chlorine-free disinfectant. Advantages : Anti-phosphate treatment: can be used as a preventive or curative treatment Prevents the saturation of your pool in phosphate Characteristics : To be put directly in the skimmer/discharge nozzles (for cartridge filtering) Capacity : 1 L Ref. 150090U Advice : Pour the product directly into the skimmer, leaving the filtration system running. For cartridge, bag or diatom filter systems: pour the product directly into the pool in front of the discharge nozzles. After the treatment, clean the filter by backwashing to eliminate the agglomerated phosphates or vacuum the bottom of the pool. Please read the instruction manual for proper use of this product; please note that biocidal products should be handled with care. Packaging: One bottle of MAREVA -1L phosphate-stopper - 150090ULivre in its original packaging