Swimming pool calcium hardness levels should be maintained at a minimum of 200mg/l (ppm) to ensure that the pool and equipment are protected. Calcium Hardness Raiser is a calcium flake which rapidly increases calcium hardness to the desired level.

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 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.
• 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 the pH level and if necessary adjust.