Water Hardness Increaser 4 lb
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PoolSupplyWorld PSW-NY591 Water Hardness Increaser 4 lb Bucket

SKU #: PSW-NY591

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Short Description

Water Hardness Increaser raises the calcium hardness of the pool Water to the minimum level of 200 ppm.

Pool Chemical Features:

  • Includes one 4 lb. bucket
  • Raises the hardness (calcium) level to ideal range
  • Prevents water from becoming corrosive
  • Stops staining and etching of pool surfaces caused by low hardness levels
  • Dosage: 5 lbs. for every 10,000 gallons to raise levels 40ppm
  • Note: Items received have the same chemical make-up, but may not look exactly like the item pictured above.


In order to achieve perfect pool water, there are many elements that need to be balanced and water hardness is one of them. Water Hardness Increaser helps bring calcium levels to their ideal range of 150-175ppm for vinyl or fiberglass pools or 240-300ppm for concrete or plastered surfaces. The right water hardness prevents the corrosion of pool equipment and staining of surfaces, keeping your pool looking its best. Water Hardness Increaser is easy to use and delivers results that make your pool water enjoyable for you and safe for your equipment.

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