Aqua Balance 3 Raises Calcium Hardness Levels In Swimming Pool Water. Low Calcium Hardness Levels In Swimming Pool Water Can Cause The Water To Be Corrosive. This Can Result In Deterioration And Damage To The Pool Surfaces And Equipment. Plaster Surfaces Could Suffer Etching And Formation Of Rough Areas That Permit Easy Algae Growth. Recommended Levels Of Calcium Hardness In Swimming Pools Are As Follows: *Plaster
