Pool Mate 16-Pounds Premium Calcium Hardness Increaser for Pools – 100% Calcium Chloride

Keep pool water balanced with Pool Mate Calcium Hardness Increaser

Pool Mate 16-Pounds Premium Calcium Hardness Increaser is a dry, granular solution designed to raise the total calcium hardness in your pool water. When used as part of a regular maintenance routine, it helps support a stable water balance and a well-preserved pool surface.

What calcium hardness does for your pool

Calcium hardness plays a key role in protecting pool surfaces and equipment. Proper levels help reduce the risk of corrosion and etching, while contributing to clearer water and smoother surfaces. This product targets the calcium component of your water balance, allowing you to fine-tune measurements based on your pool type and usage.

Ideal ranges by pool type

Understanding the right range helps you tailor dosing to your pool’s needs. Typical targets are:

• Vinyl Pools: 200–300 ppm
• Tile and Exposed Aggregate Pools: 200–400 ppm
• Marcite, Fiberglass, or Painted Pools: 250–400 ppm

These ranges serve as guidelines for maintaining surface integrity and water quality. Use a trusted test kit to verify your current level before adjusting dosage.

Key benefits you may notice

• Rapidly increases total hardness with calcium chloride to support surface protection and equipment longevity.
• Helps maintain an ideal calcium hardness window, which can reduce surface staining and dulling associated with low hardness.
• Small, measurable dosing: about 8 ounces can raise hardness by roughly 10 ppm in a 5,000-gallon pool, making incremental adjustments straightforward.
• Supports long-term stability of pool water, contributing to a balanced chemistry when used with a reliable testing routine.
• Easy-to-use format aligns with common pool maintenance practices without complicating your routine.

How to use for best results

Prepare a dilute solution and distribute it around the pool perimeter while the circulating system is operating to promote even mixing. Pair dosing with regular testing to stay within your target range and adjust as needed.

• Test calcium hardness with a reliable test kit before and after dosing.
• If testing shows levels below the desired range, mix up to 2 pounds of product per roughly 5 gallons of water in a bucket.
• With the circulation running, slowly pour the solution around the pool perimeter to encourage uniform distribution.
• In a 10,000-gallon pool, do not add more than 10 pounds in a single 2-hour period.

By following these steps, you can approach the target hardness more predictably while maintaining a balanced and inviting pool environment. This product is a maintenance aid, not a guarantee, and results will vary with pool size, water chemistry, and usage.