AquaDoc Spa Calcium Hardness Increaser – 32 oz, USA Made

Balanced hardness for a better hot tub experience

AquaDoc Spa Calcium Hardness Increaser is a 32 oz formula designed to help hot tub water reach and maintain the calcium hardness levels recommended for many spa systems. By supporting a proper hardness range, this product aims to protect spa surfaces, heaters, and other components from the wear that can come with softer water. The result is a spa water environment that feels steadier and more predictable, making routine use and maintenance part of a smoother routine.

Key benefits at a glance

• Supports proper water hardness so your spa feels steady and balanced over time.
• Helps reduce the risk of soft water damage, contributing to protective conditions for surfaces and equipment.
• Helps limit corrosion and surface wear by maintaining a stable water profile in the hot tub.
• Quick-dissolving granules disperse easily in circulating water for convenient use.
• Contributes to clearer, balanced water by reducing cloudiness and scaling as part of a regular care routine.
• Made in the USA with consistent quality standards for reliable spa performance.

How to use with confidence

• Add the directed amount to your hot tub, then circulate the water for 1 to 2 hours.
• Retest the water to ensure hardness stays within the recommended range for your spa model.
• Keep your routine simple by incorporating this step into regular water care and testing.

Why choose AquaDoc

Made in the USA, AquaDoc products are crafted to support long-term spa performance and comfortable water. This Calcium Hardness Increaser is designed to be effective without requiring special handling, helping you maintain a reliable hardness setpoint as part of your overall water care plan. While results can vary with usage and water chemistry, many hot tub owners appreciate the consistency it aims to provide when used as directed.