The ideal calcium hardness level for swimming pools is 200 - 275mg/l (ppm). When the calcium hardness level is below 200 mg/l (ppm), water can be corrosive, leading to damage to the pool finish and support equipment. Hardness Plus is used to increase calcium hardness.
Application Instructions
- Before applying this product, it should be pre-dissolved in a clean plastic container at a maximum rate of 100g of product to 10 litres of cold fresh water. Stir well to ensure that the product is fully dissolved. Repeat the application to achieve total dose required - see the label for dose rates. It is recommended that the total treatment is split into three equal applications with a minimum of 8 hours between each.
- After pre-dissolving, add the resulting solution to the pool near the inlets with the filtration system in operation.
- Following the application, the pool water may become cloudy so keep the filtration pump running continuously until it clears.
- After treatment, check pH level and if necessary adjust to the ideal range of 7.2-7.6
Always read the label on the container fully before use.
This product has to be sent by courier
