In The Swim Calcium Hardness Increaser

Proper calcium levels prevent your pool water from becoming 'aggressive,' which can lead to the corrosion, pitting, and etching of plaster surfaces. Maintaining the correct balance protects both your pool's structural integrity and your mechanical equipment.

The standard dosage is 6 pounds of calcium hardness increaser per 10,000 gallons of pool water. Always test your water first to ensure you are only adding what is necessary to reach the ideal range of 180–220 ppm.

This product is specifically formulated for plaster pool surfaces. If you have a vinyl or fiberglass liner, consult your manufacturer's guidelines, as these materials generally do not require the same calcium hardness levels as plaster.

Exceeding the recommended levels—specifically going above 400 ppm—can lead to cloudy water and the development of scale buildup on your pool surfaces and equipment. It is best to add the chemical gradually and retest your water to avoid overshooting your target.

Yes, because the active ingredient is 94% calcium chloride, it is highly effective at melting snow and ice on walkways or driveways. However, ensure you are using it in areas where the runoff will not negatively impact your pool's chemical balance.