Description Pool Pro Hardness Raiser Calcium Chloride Pool Pro Hardness Raiser is used to raise low hardness levels in swimming pool water. When a correct hardness level is maintained in accordance with the Langelier Index for swimming pools, there will not be any corrosion of the pool’s surface. FEATURES & BENEFITS Granular formulation for easy dissolving. Raise hardness levels. DIRECTIONS FOR USE Add 150 grams per 1000L of pool water to raise hardness levels 100mg/L. Mix hardness raiser 1kg maximum in a bucket of water before dispensing over the pools surface. Run the pool filter 4-5 hours before re testing levels.
