"PH Bundle" 1KG Ph+ Plus And 1.5KG PH- Minus Hot Tub Swimming Pool Tubs Spa - +
Simply Test Your Spa/Pool water and Follow the instructions on the back of the tubs to Adjust your PH correctly. Use this high quality PH Minus and PH + 1kg to adjust the PH value of the water in your spa (7.2 to 7.6 is the optimum for spas).