Calcium hardness refers to the amount of dissolved calcium in pool water. Maintaining an adequate level is crucial for preventing corrosion of pool surfaces and equipment. When calcium levels are insufficient, water becomes aggressive and attempts to satisfy its calcium demand by drawing it from plaster, grout, and metal components, leading to pitting, etching, and deterioration. A common method to increase this measure involves the addition of calcium chloride, carefully following product instructions and testing water to avoid over-correction.
Proper calcium balance offers several benefits, primarily prolonging the lifespan of the pool’s structure and associated hardware. Historically, improper water chemistry has been a major cause of pool surface degradation, leading to costly repairs and resurfacing. Addressing low calcium levels early mitigates the risk of these issues, ensuring the pool remains aesthetically pleasing and structurally sound for extended periods. Moreover, balanced water chemistry optimizes the effectiveness of sanitizers, contributing to a healthier swimming environment.