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In swimming pools and spas, calcium phosphate scale is rare. But in the right conditions, it can form scale deposits that are harder to manage (and remove) than calcium carbonate. This article explains calcium phosphate, how it forms and precipitates, and how you can prevent it.
Calcium hardness is one of the most important factors in water chemistry, and swimming pool chemistry especially. It is one of the six LSI factors, and because it does not fluctuate much, we love using calcium hardness as a foundation for water balance. Let's discuss why.
Carbonate Scale is a buildup of hardened calcium carbonate (CaCO3) on pool surfaces or equipment. Scale can be a big problem for a pool and its plumbing system (and other water systems besides pools, like fountains).