To prevent a agresivity of water on the materials that forman the pool is essential increase with the CTX-22 the dureza cálcica up to valuees >175ppm that pudiese producir a low dureza cálcica of water. Ideal for: All types for pools. Prevents that due a desequilibrio of water produzcan irritation of the skin and the eyes of the swimmers, corrosion of the parts metal of the pool and a consumption excesive of desinfectant. Add 1,5 Kg. of product, to increase in 10 ppm the dureza of 100 m.3 of water, siendo this dosis of character indicative. The dureza of water, should estar situed between 175-300 ppm (CO3Ca) and its control realizará for medio of a test kit a vez to the mes. Verter the dosis necesary of product disuelta in water, and repartir said solution on the pool surface for a igual.