Allows the maintenance and recovery of the pool water for the bathing season. Add when the temperature drops below 15ºC at the end of the bathing season. Saves money Facilitates the start-up of the opening season of the swimming pool. Prevents algae and limescale formation RECOMMENDED DOSAGE: At the end of the season with the water in good condition with the water at a maximum temperature of 15ºC and with a free chlorine content of less than 0.5 mg/l. Add the product, spreading it around the perimeter of the pool and with the purifier running at a rate of 5 l/50 m3. If there is no chlorine in the water: We recommend adding Choc Rapid 500 gr. for 50 m3. You can find it under related products. Or follow this link: https://www.piscinayspa.com/es/accesorios-piscinas/9/producto-quimico-piscinas/6660/quimicamp-202501-choc-rapid-granulado-500-gr/ Repeat the treatment after 3 months.