The pH reducing granule is first dissolved at a rate of 1/10 and filled into the dosage tank. It should be used before the filtration system with the dosing device. If there are automatic measuring devices, the system itself automatically measures the pH and dosing sufficiently when needed.
In direct application, 0.5 kg should be used in soft water and 1 kg in hard water to reduce the pH by 0.1 unit. After determining the amount to be used, it should be melted in a plastic container and applied from the balance tank, and in pools with skimmers, from the skimmer.  
Appropriate protective masks, glasses, gloves and clothing should be used. It should not be mixed with any other product or substance.