Summer Smiles Spa Calcium+ - 1 L Calcium Hardness Increaser for Hot Tubs & Spas

Maintain properly balanced hot tub water with Summer Smiles Spa Calcium+ - 1 L, a liquid calcium hardness increaser designed to help correct low calcium levels in hot tubs and spas.

Calcium hardness is an important part of spa water chemistry. When calcium levels are too low, water can become aggressive toward certain spa components and surfaces, potentially contributing to equipment wear and water balance problems.

Summer Smiles Spa Calcium+ is designed to increase calcium hardness when water testing indicates levels are below the recommended range. Maintaining appropriate calcium hardness helps support balanced water chemistry and protect your hot tub investment.

Proper calcium levels also work alongside pH and total alkalinity to maintain stable spa water conditions. Regular testing and adjustments can help reduce the risk of corrosion, scale formation, and other water balance issues.

The convenient 1 L liquid format makes Spa Calcium+ a practical addition to your regular hot tub maintenance supplies, whether you're balancing freshly filled spa water or making routine adjustments.

Available at Splash Pool & Spa in Peterborough, Ontario, proudly serving Peterborough, the Kawarthas, and spa owners across Canada.

Why Calcium Hardness Matters

Calcium hardness measures the concentration of dissolved calcium in spa water. Maintaining an appropriate level helps:

• Prevent excessively low calcium hardness

• Support balanced spa water chemistry

• Reduce the risk of aggressive water conditions

• Help protect compatible spa surfaces and components

• Support predictable pH and alkalinity management

• Reduce water balance problems associated with improper calcium levels

• Maintain a consistent hot tub maintenance routine

Important: Excessively high calcium hardness can contribute to scale formation and cloudy water. Always test before adding calcium increaser.

Key Features

• Designed to raise calcium hardness in spa water

• Helps correct low calcium levels

• Supports balanced hot tub water chemistry

• Helps reduce problems associated with excessively soft water

• Convenient 1 L liquid format

• Suitable for routine hot tub maintenance

• Ideal for adjusting freshly filled spa water

• Part of the Summer Smiles spa water care collection

Product Specifications

Why Choose Summer Smiles Spa Calcium+?

Maintaining the correct calcium hardness is an important part of protecting your hot tub and keeping your water properly balanced.

Summer Smiles Spa Calcium+ provides a convenient way to increase calcium levels when testing shows your spa water is too soft.

Whether you're filling your hot tub for the first time, replacing spa water, or correcting low calcium hardness during regular maintenance, Spa Calcium+ is a useful addition to your water care supplies.

How to Use

1. Test your spa water. Measure calcium hardness using a suitable test kit.

2. Check the recommended range. Compare your results with your spa manufacturer's calcium hardness recommendations.

3. Calculate the correct dosage. Follow the Summer Smiles Spa Calcium+ label based on your water volume and current calcium hardness.

4. Add the product as directed. Follow the manufacturer's instructions for adding the liquid treatment.

5. Allow proper circulation. Circulate the water for the period specified on the label.

6. Retest the water. Check calcium hardness before making additional adjustments.

Safety: Never mix concentrated spa chemicals together. Follow all manufacturer handling instructions and keep chemicals out of reach of children and pets.