Maintain balanced pool water with Zodiac Calcium Up, a calcium hardness increaser designed to raise calcium levels in swimming pools. Maintaining the correct calcium hardness helps protect pool surfaces and equipment while supporting good water balance.

Features & Benefits
• Increases calcium hardness in swimming pool water.
• Helps protect pool surfaces and equipment by maintaining appropriate calcium levels.
• Suitable for concrete and fibreglass pools, with different recommended calcium hardness ranges.
• Easy application: Dissolve in water before adding to the pool.

Recommended Calcium Hardness
• Concrete pools: 200–400 ppm
• Fibreglass pools: 150–250 ppm

Application & Dosage
• Dosage rate: 100g raises calcium hardness by approximately 10 ppm per 10,000 litres of pool water.
• Dissolve the required amount in a bucket of water, then carefully apply the solution to the pool.
• Allow the pump and filter to run for 6–8 hours before retesting calcium hardness.
Follow the product label directions and test the water before adjusting calcium levels.

Helpful Tips
• Do not add Calcium Up within 2–4 hours of adding Alkalinity Up/Buffer, as this may cause significant cloudiness.
• Calcium is more likely to precipitate in warmer water.
• Low calcium hardness can contribute to foaming.
• Test pool water regularly to help maintain the recommended calcium hardness range.

Product Details
• Brand: Zodiac
• Product Number: WC000419
• Pack Size: 2kg
• Active Constituent: 990g/kg Calcium Chloride