SpaGuard Spa Calcium Hardness Increaser (12 oz) 3-Pack – Raise Calcium Hardness to 200–400 ppm

Effortless calcium hardness management for your spa

SpaGuard's Calcium Hardness Increaser is a practical, granulated formula designed to raise water hardness with predictable results. This 3-pack provides a convenient supply for ongoing spa maintenance, helping you achieve steadier calcium levels without guesswork. The fine granules dissolve smoothly, making a routine balance feel smoother and more manageable.

Why calcium hardness matters: when the calcium content falls too low, spa components and plumbing can become more vulnerable to wear and corrosion. This product targets a safe range where hardness supports metal components and interior surfaces, while avoiding excessive buildup that can cloud water or leave deposits.

Key benefits

• Boosts calcium hardness safely and steadily to help prevent corrosion of plumbing, jets, and tub surfaces.
• Maintains an optimal range of 200–400 ppm to protect heat exchangers and equipment from excessive wear.
• Compatible with common sanitizers including chlorine, bromine, ozone, and biguanide for flexible spa care.

Real-life use and how it fits into your routine

Imagine stepping into a spa with balanced water that feels smooth and inviting. The granules dissolve readily, contributing to a stable mineral profile, and you can retest to confirm the direction of change without worrying about sudden shifts. With the 3-pack, you have steady supplies for regular maintenance across seasons.

• Usage at your own pace: add small amounts and recheck calcium hardness with a test kit.
• Pair with routine water balancing to minimize fluctuations and maintain comfort.

Quality you can rely on: SpaGuard offers a broad family of spa care solutions designed to work together, so you can tailor your approach to your spa setup. This 3-pack provides ongoing support for seasonal maintenance or frequent use.

Simple dosing ideas

• Test first, add according to instructions, then retest after the specified wait time.
• Keep a regular schedule to maintain a stable calcium range and protect equipment over time.