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Bliss Spa & Hot Tub Calcium Hardness Up

Bliss Spa & Hot Tub Calcium Hardness Up

Prevents Scale & Stains | Fast Dissolving | Compatible With All Spa Types & Sanitizers

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Bliss Spa & Hot Tub Calcium Hardness Up is a fast dissolving hardness increaser that raises calcium hardness when levels are below 250 ppm to protect spa equipment and surfaces, prevent scaling and enhance your relaxation experience. Safe for all spa types including swim spas and compatible with chlorine, bromine, biguanide, ozone and more. Test hardness twice a week with Bliss Spa Test Strips and get personalized product and dosage recommendations for your hot tub through the free Bliss Spa App. Convenient 2.25 lb resealable bag for easy, reliable water balancing.

Intended Use: Increase total hardness levels in spa/hot tub water
Ingredients: Calcium chloride compound - 100%
Dosage: 1 oz (2 tbsp) per 500 gallons will raise hardness level 10 ppm
Compatible Sanitizers: All - chlorine, bromine, biguanide, etc.
Compatible Spa Types: All
Package Dimensions: 9.06" x 5.51" x 2.16"
Package Weight: 2.25 lb
SDS: Available upon request
Form: Granular

Delivery & Returns

We ensure every purchase is processed within 1-2 business days and sent via reliable ground delivery straight to your door. We ship to the 48 contiguous United States only.

Orders should be delivered within 3-7 business days.

Transit times vary by location and product type, but we partner with trusted U.S. carriers to keep everything safe & smooth.

We accept all major credit and debit cards, plus secure express checkout options. We also offer a 30 day money back guarantee storewide - simple, fast and hassle free.

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