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Blue Horizons Calcium Hardness Raiser (calcium chloride) At the start of the season or after heavy dilution of the pool water the calcium hardness levels may need adjusting. SWIMCO PRICE £18.75
If the water is too soft, it can damage mechanical equipment and if the pool is tiled it can even lead to tiles 'popping off'. When adjusting the hardness it is important to maintain the correct pH level to prevent calcium deposits forming.
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