Set of 3 MAREVA limestone stop - 1 L - 150072Ux3, prevents limestone from settling on the walls and clouding the water (white cloudiness). Marva specializes in the manufacture and design of treatment products and equipment for in-ground pools, above-ground and self-supporting pools or 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) which is a chlorine-free disinfectant. Advantages : Essential product in case of hard water for pools treated with calcium hypochlorite Prevents limestone from settling on the walls and clouding the water (white cloudiness) Compatible with all liners and all types of treatment Recommended for water with a TH higher than 25F (250 mg/L). Characteristics : Batch of 3 Action : anti limestone Composition: limestone precipitation inhibitor and a sequestering agent Capacity of a bottle : 1 L Shelf life : 3 years Ref. 150052Ux3 Directions for use: Preferably, treat the pool from the start to obtain a better efficiency of the disinfecting products Calculate the TH of your pool with the help of an analysis tab Then adjust the TH for a good water balance. Necessary quantity of STOP CALCAIRE at the beginning of the season: 0,25 liter for 10 m3 Pour the product in front of the outlets, with the filtration system running Add more STOP-CALCAIRE according to the amount of water added during the season Packaging : A batch of 3 MAREVA limestone stop - 1 L - 150072Ux3Delivered in its original packaging