Spa Essentials Calcium Hardness Increaser Granules – 12 oz for Spas & Hot Tubs

Overview

Spa Essentials Calcium Hardness Increaser Granules are designed to help maintain proper calcium hardness in spa and hot tub water. By increasing calcium hardness, this product supports a stable water balance and helps protect metal surfaces and equipment from wear and corrosion. The 12-ounce bag is simple to use and requires no assembly—just pour and circulate.

What it does for your spa

• Increases Calcium Hardness Level In Spa Water
• Helps Prevent Corrosion Of Spa Equipment And Surfaces
• Easy To Use
• No Assembly Required

Practical benefits and use cases

In many spa maintenance routines, maintaining proper calcium hardness helps reduce rough water feel and supports reliable operation of heaters and jets. While results vary with overall water balance, adding these granules can be a convenient way to support a balanced environment that feels comfortable on skin and protects internal components.

Ideal for spas in areas with softer or variable water supply, or whenever you notice a drop in calcium hardness. The product works best when paired with regular water testing as part of a broader care routine.

How to use and care

• Test water regularly and follow label directions for dosage recommendations
• With the spa running, slowly add the granules and circulate until fully dissolved
• Store in a cool, dry place and keep out of reach of children

Note: This product is part of a broader approach to spa chemistry. Consider your spa size, usage, water source, and other balance factors when planning maintenance steps. Always consult the product label for the most accurate guidance.

Always read and follow the product label. Dose to the label rate for your actual water volume, never mix pool chemicals together, and store them dry, sealed and away from children and pets.