A fast-dissolving calcium chloride formula designed to help raise calcium hardness levels and support balanced pool water as part of routine maintenance when used as directed.
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Product Details
This Calcium Hardness Increaser is a fast-dissolving calcium chloride formula designed to help raise calcium hardness levels in pool water when used as directed. Supporting proper hardness levels can assist with maintaining balanced water conditions and supporting the care of pool surfaces and equipment as part of routine maintenance.
How to use
Directions for Use
Add this product directly to the water with the circulation system running and brush any settled product.
Do not add this product on the same day as another product used to increase pH or alkalinity.
Add 1.2 lbs per 10,000 gallons of water to increase calcium hardness by 10 ppm (1 lb = 2.75 cups).
Wait two hours and retest calcium hardness.
Do not dissolve this product before use or mix it with
other products in the same bottle or pail. See label for detailed instructions.
Frequently Asked Questions
Why do I need to increase calcium hardness?
Low calcium hardness can contribute to water conditions that may be more aggressive toward pool surfaces and equipment. Maintaining appropriate calcium levels can help support overall water balance during regular pool care.
What’s the recommended calcium range?
Many pools aim for a calcium hardness range of approximately 200–400 ppm. Always test your water before application and adjust gradually based on test results and label directions.
Is it safe for saltwater pools?
Yes, this calcium hardness increaser is compatible with saltwater, chlorine, and bromine pool systems when used according to instructions.
How fast does it dissolve?
This product is formulated to dissolve quickly when added to the pool with the pump running. Brushing the area after application can help ensure even distribution.
Can I swim right after using it?
Allow sufficient time for the product to fully dissolve and circulate before swimming. Testing the water after circulation is recommended to confirm balanced conditions.
Is this product compatible with Baquacil?
Yes, this calcium hardness increaser is compatible with Baquacil systems and can be used as part of a regular water balancing routine.
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