Sirona Calcium Booster is a fast-dissolving granular treatment designed to raise calcium hardness levels in spas and hot tubs. Proper calcium hardness is essential for protecting spa surfaces and equipment, especially in low-calcium or softened water where corrosion and etching can occur.

When calcium levels are too low, spa water becomes aggressive and can damage heaters, pumps, plumbing, and acrylic surfaces. Sirona Calcium Booster corrects this imbalance by restoring calcium hardness to the recommended range, helping stabilize water chemistry and extend equipment life.

This product is ideal for new fills, softened water systems, or anytime calcium hardness tests low.

Why Calcium Hardness Matters

Low calcium water can damage spa components.

Why this matters:

• Prevents corrosion of heaters and metal components

• Protects acrylic surfaces from etching

• Stabilizes overall water balance

• Extends equipment lifespan

• Improves long-term water quality

Designed for Spa Water Conditions

Sirona Calcium Booster is formulated specifically for hot water environments, where improper calcium balance can quickly lead to surface damage or premature equipment failure. The granular formula dissolves rapidly and distributes evenly through circulating spa water.

It is compatible with chlorine and bromine spa systems and does not interfere with sanitizer performance when used as directed.

Supports Balanced, Comfortable Water

Balanced calcium hardness helps prevent foaming, reduces water aggressiveness, and supports consistent pH stability. When used as part of a complete spa care routine, Calcium Booster helps maintain water that is both equipment-safe and comfortable for bathers.

Regular testing is recommended to avoid overcorrection.

Application & Service Notes

Add directly to spa water with circulation running. Typical uses include:

• At start-up or refill

• When calcium hardness tests low

• After using softened or low-mineral water

Allow full circulation before retesting water chemistry.

Product Specifications

Buy with Confidence from Benchmark Pool Supply

Benchmark Pool Supply carries Sirona Calcium Booster to help spa owners protect their investment and maintain proper water balance. Correct calcium hardness is a critical—often overlooked—part of professional spa care.

Quality products, expert guidance, and dependable supply—every time.