Calcium hardness for spa - Spa calcium +
Calcium hardness for spa - Spa calcium +

Calcium hardness for spa - Spa calcium +

Regular price
$9.99
Sale price
$9.99
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Regular price
$9.99

This product helps maintain a balanced calcium hardness to prevent corrosion of metal surfaces, protect spa equipment and ensure bather comfort.

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SKU: 47274

Availability

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This product helps maintain a balanced calcium hardness to prevent corrosion of metal surfaces, protect spa equipment and ensure bather comfort.

FEATURES

Type of basin: Spa
Product type: Balancing product
Function: Increases calcium hardness level
Period of use: Maintenance
Treatment time: No treatment time
Quantity: 12 g per 1,000 L of spa water
Method of use: Dissolve in water boiler

NOTE

1. Check calcium hardness with a calcium hardness test kit. The ideal level is 100 to 200 ppm.
2. To increase calcium hardness by 10 ppm, dissolve 12 g per 1,000 L of spa water in a water boiler. Add to spa water.
3. Check calcium hardness values regularly and readjust if necessary.

Specifications

900 g

Format de 900 g

Main Actions: Adjust water hardness, Balance water
Product Category: Balancing Products
Dissolution: Fast
Forms: Granules
Application Method: To pour directly into the water
Usage Period: Monthly
Water Balance: Calcium hardness too low
Safety and Storage: Protect eyes, Avoid contact with skin, Keep out of reach of children and animals, Follow the manufacturer's instructions, Store in a cool, dry place
Treatment Time: 30 min
Basin Type: Spa

PRECAUTIONS:

HARMFUL CONTENTS. MAY IRRITATE EYES AND SKIN. Do not swallow. Avoid contact with eyes, skin, and clothing. Do not breathe fumes. Keep out of reach of children. Use only in a well-ventilated area. Wear safety goggles and gloves. Do not mix with other chemical products.

FIRST AID:

Contains calcium chloride.

If swallowed: Call a poison control center or doctor immediately. Do not induce vomiting.

If in eyes: Rinse with water for 15 minutes.

If on skin: Rinse thoroughly with water.

If on clothing: Remove contaminated clothing.

If inhaled: Move the exposed person to fresh air.

WASTE DISPOSAL:

Rinse empty containers with cold water and recycle the packaging where a recycling program exists. Any unused or unwanted product should be taken to an authorized waste treatment facility for disposal.

Delivery is free for chemicals and small accessories with purchases of $50 or more. A $10 fee applies to orders under $50. We deliver quickly across Canada for this item.

1. Check calcium hardness with a calcium hardness test kit. The ideal level is 100 to 200 ppm.
2. To increase calcium hardness by 10 ppm, dissolve 12 g per 1,000 L of spa water in a water boiler. Add to spa water.
3. Check calcium hardness values regularly and readjust if necessary.

Key Characteristics

Important Role

Adjusts the calcium level to protect pool surfaces and metal components from corrosion.

Simple and effortless

A concentrated formula that can be used in two simple steps: calculate and pour.

Formidable efficiency

Its high concentration guarantees maximum efficiency for rapid water treatment.

Peace of mind

A certified product, tested in real conditions, for uncompromising maintenance.

How to use - Calcium+

This video guides you step by step on how to useCalcium+Simply and effectively. This balancing product is designed to increase and maintain a balanced calcium hardness to prevent corrosion of metal surfaces, protect spa equipment and ensure bather comfort.

How to use the product:

  • Check the calcium hardness of the water using a test kit. The ideal recommended level is between 100 and 200 ppm.
  • To increase calcium hardness by 10 ppm, dissolve 12 g of Calcium+ per 1000 L of spa water in a water boiler.
  • Add the resulting solution directly into the spa water while the circulation is running.
  • Regularly check calcium hardness values ​​and adjust as needed to maintain a good water balance.

How to Properly Balance Your Spa Water?

Discover the right habits to adopt, the mistakes to avoid, and our practical tips for maintaining perfect balance throughout the season. Whether you’re a new spa owner or experienced, this video will help you simplify maintenance and extend the life of your equipment.

GUIDE

How to properly balance your spa water

Well-balanced water ensures comfort, performance, and long-lasting protection for your spa. Follow our guide to understand each parameter and achieve flawless results.

View the guide

FREE spa maintenance course

A simple, hands-on course to better understand spa maintenance and enjoy a worry-free experience all year long. (Taught in French)

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FAQ


There is no direct chemical product to lower the water hardness of a spa. To reduce excessive hardness, the most effective solution is to partially or completely drain the spa and refill it with softer water (filtered, softened, or tap water with a lower mineral content). Water that is too hard can cause limescale buildup, cloudiness, and reduced heater performance. After refilling, the pH and alkalinity should be adjusted to stabilize the water.


To increase the water hardness in a spa, you need to use a "calcium hardness enhancer" (also called "Calcium Plus"). The ideal hardness for a spa is generally between 100 and 200 ppm. Water that is too hard makes it corrosive, which can damage the equipment, the heater, and even the spa's liner. To correct the hardness, add the recommended amount of product based on the spa's volume, let the water circulate for 20 to 30 minutes, and then test again. Always increase the hardness gradually to avoid exceeding the optimal level.

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This is the amount of dissolved calcium in the water. Proper hardness protects the acrylic, heat exchanger, and metal parts. Indicative targets: 100–200 ppm for spas. Too low → “aggressive” water, risk of corrosion and foaming; too high → limescale deposits (white marks), cloudy water, and clogged filters.


Adjusting calcium hardness is essential for protecting your spa and keeping the water stable. Low calcium hardness makes the water corrosive, which can damage surfaces, heaters, jets, and other components over time. High calcium hardness, on the other hand, leads to cloudy water, scale buildup, and calcium deposits inside the spa and plumbing. Keeping calcium hardness in the ideal range of 100–200 ppm helps prevent corrosion, reduces scale formation, and keeps the water clearer, more stable, and more comfortable for bathers.

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