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Hardness Increaser (Calcium Chloride)

Hardness Increaser (Calcium Chloride)

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Our hardness increaser is convenient and easy to use. It will quickly increase the calcium hardness in your pool, hot tub or spa water. Low hardness can corrode your pool, hot tub or spa plumbing and heaters as well as staining or etching the surface.

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Water hardness should be kept between 100- 250 ppm for acrylic finish, and 250-450 ppm for plaster finish

Swimming Pools

To increase hardness of a 10,000l pool by 50ppm add 750g of Hardness Increaser

Spa and Hot Tub

To Increase hardness of a 1000l spa by 50ppm add 75g Hardness Increaser

Please refer to packaging or MSDS
MSDS can be requested from
0845 8722732

Additional Information

Component Calcium Chloride
State (type) Granules
Colour White/beige
Odour None