The ideal hot tub PH levels are between 7.2 and 7.6 promoting bath comfort, optimum chemical efficiency and protection fo your hot tub equipment.
Test the PH of your spa water and if it below 7.2 use Hot Spring Freshwater Ph Plus to increase the level to the optimum range. Slowly add to the filter compartment with the jets running. After 30 minutes test the Ph level and repeat if necessary. Dose at 11g per 1,000 litres.