Calcium hardness for spa - Liquid spa calcium +
Calcium hardness for spa - Liquid spa calcium +
Calcium hardness for spa - Liquid spa calcium +
Calcium hardness for spa - Liquid spa calcium +
Calcium hardness for spa - Liquid spa calcium +
Calcium hardness for spa - Liquid spa calcium +

Calcium hardness for spa - Liquid spa calcium +

Regular price
$13.99
Sale price
$13.99
Sale
0% off
Regular price
$13.99

This product helps maintain balanced calcium hardness to prevent metal surface corrosion, protect spa equipment, and ensure bather comfort. Its liquid formula is specifically designed for spas and allows for immediate dissolution without leaving residue. Swimming can resume immediately after adding the product.

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SKU: 35720

Availability

In-store pickup
Pickup available in 24 hours at 03 Brossard - DIX30 Pickup unavailable at 03 Brossard - DIX30
In-store availability
61 In stock at 03 Brossard - DIX30 61 In stock at 03 Brossard - DIX30 Sold out at 03 Brossard - DIX30

Maintain balanced water and protect your spa with Spa Calcium+, a liquid solution designed to quickly adjust calcium hardness. Its immediate-dissolving formula acts effectively without leaving deposits, ensuring comfort, equipment protection, and water stability.

Features

  • Quickly increases the water's calcium hardness
  • Protects metal surfaces against corrosion
  • Preserves spa equipment (pump, heater, fittings)
  • Improves bather comfort
  • Liquid formula with immediate dissolution, no residue
  • Allows for quick swimming after treatment
  • Size: 900 ml

900 ml size

Main Actions: Adjust water hardness
Product Category: Balancing Products
Forms: Liquid
Application Method: To pour directly into the water
Water Balance: Calcium hardness too low
Safety and Storage: Add granules to water, never the reverse, Follow the manufacturer's instructions, Store away from cold, Store away from heat, Store in a cool, dry place, Use appropriate protective equipment, Keep out of reach of children and animals, Protect eyes
Basin Type: Pool

PRECAUTIONS:

Do not mix with other chemicals. Avoid contact with eyes. Keep out of reach of children.

FIRST AID:

If swallowed: Immediately call a poison control center or doctor. Do not induce vomiting. If in eyes: Rinse with water. If on skin: Rinse well with water. Get medical advice if symptoms persist.

WASTE DISPOSAL:

Rinse empty containers with cold water and ensure proper disposal where a recycling program exists. Any unused or unwanted product should be taken to an authorized waste disposal 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 this item throughout Quebec, Ontario, New Brunswick, and Nova Scotia.

1. Regularly check the hot tub water hardness level to keep it consistently between 100 and 200 ppm.
2. When the analysis indicates a hardness level below 100 ppm, add 110 mL per 1,000 L of hot tub water to increase the hardness by 50 ppm.
3. Pour the necessary amount directly into the hot tub water while the hot tub is running.
4. Wait 15 minutes before using the hot tub.

Key Features

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 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.

Consult our products and Consult our products


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.

Consult our products and Consult our products

Overall rating: 5.0 / 5 from 2 reviews.

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produits pour spa

"Ils ont changé les bouteilles de produits beaucoup plus belles"

— NATHALIE M. (5/5)

Bon produit

"Efficace"

— ÉMILIE P. (5/5)

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