Hot Spring Freshwater PH + Increaser 1kg Used to increase the PH and Alkalinity of you hot tub water A low PH can be corrosive, cause eye sting and lead to inefficient sanitiser so by increasing the PH to between 7.2-7.6 you will prolong the life of your hot tubs and make the ...Hot Spring Freshwater PH + Increaser 1kg Used to increase the PH and Alkalinity of you hot tub water A low PH can be corrosive, cause eye sting and lead to inefficient sanitiser so by increasing the PH to between 7.2-7.6 you will prolong the life of your hot tubs and make the experience more pleasurable From Hot Spring, the World's Number 1 hot tub manufacturer 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.