November 30, 2021

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Pool Accessories

Pool Equipment



Blue Horizon Calcium Hardness

Sales price £17.90
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Blue Horizons Calcium Hardness Raiser

Ideal Calcium Hardness level: minimum 200mg/l (ppm)


  1. Before applying this product it should be pre-dissolved in a clean plastic container at a maximum rate of 100g of product to 10 ltrs of cold fresh water. Stir well to ensure the product is fully dissolved. Repeat application to achieve the total dose required – see table below for dose rates. It is recommended that the total treatment is split into three equal applications with a minimum of 8 hours between each.
  2. After pre-dissolving add the resulting solution to the pool near the inlets with the filtration system in operation.
  3. Following the application the pool water may become cloudy so keep the filtration pump running continuously until it clears.
  4. After treatment check the pH level and if necessary adjust.

Warning: Heat is generated when pre-dissolving this product. Always use clean cold water.



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