Pool Accessories 3 In 1 Hot Tub Pool Water Test Kit

Total hardness : total hardness measures the amount of calcium and other minerals in your water . Having water either too hard or too soft . combined with other balance factors , can damage pool equipment and surfaces . Maintain total hardness between 175-275ppm

Total Chlorine : total chlorine is the amount of chlorine in your water , including free available and combined chlorine . Maintain total chlorine between 1-4ppm.

Free Chlorine : free chlorine measures the amount of chlorine available to sanitize your pool water , which is necessary to kioo bacteria and control algae . Maintain free chlorine between 1-4ppm .