What is calcium hardness?
Calcium hardness is the amount of dissolved calcium in water. If the calcium level is too high it can cause scale to attach to the pool walls, build up in the equipment and cause cloudy water. If the level is too low it can damage equipment and the pool surface. back to top Q: Theres some pinkish, slimy stuff in my pool. Help! A: That sounds like slime. Bring in a water sample. If it is slime, brushing the pool walls before treating is very important. Use Super Soluble to treat for slime in chlorine or bromine pools. In SoftSwim pools use Assist.
Calcium Hardness (or Total Hardness), as the name implies, refers to the hardness of the water, measuring the amount of mainly calcium and also other minerals. Swimming pools require hard water defined as water with more than 100 ppm of hardness ions. Like pH and alkalinity, calcium hardness affects the tendency of pool water to be corrosive when it is low and scale forming when it is high. Generally, calcium hardness levels should be kept between 200 and 400 ppm.
