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Hardness Control

Keep your pool's water from becoming corrosive and possibly damaging your plumbing and heater. Use hardness control as needed to raise the hardness (calcium) level in your pool to the ideal range.


Hardness Control 18lb Container

Hardness Control 18lb Container

Keep your pool's water from becoming corrosive and possibly damaging your plumbing and heater. Ideal for areas where soft water is a problem. Use...

$40.02
Sale: $34.02
Save: 15% off


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Hardness Control 25lb Container

Hardness Control 25lb Container

Keep your pool's water from becoming corrosive and possibly damaging your plumbing and heater. Ideal for areas where soft water is a problem. Use...

$41.28
Sale: $35.08
Save: 15% off


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Hardness Control 7lb Container

Hardness Control 7lb Container

Keep your pool's water from becoming corrosive and possibly damaging your plumbing and heater. Ideal for areas where soft water is a problem. Use...

$18.96
Sale: $16.11
Save: 15% off


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