Calcium Chloride a Chemical to help correctly balance swimming pool, spa and hot tub water by increasing water hardness levels.
Our store is temporarily closed until 7th October 2026.
Thank you for your patience, we apologise for any inconvenience.
Thank you for your patience, we apologise for any inconvenience.
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- Balancing & Testing, Calcium Hardness Increaser, Water Hardness & Alkalinity
Calcium Hardness Increaser 1kg
- £10.50 Includes VAT & FREE Shipping
- CrystalClear® Calcium Hardness Increaser
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