W'eau Calcium Booster - 1 liter
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The W’eau Calcium Booster is a high-quality liquid solution specially developed to increase the calcium hardness of spa and jacuzzi water. Proper water balance is crucial for maintaining the quality of your spa system. Calcium plays a key role here: a calcium hardness that is too low can lead to corrosion of metal parts, damage to the acrylic surface, and problems with pumps, heating elements, and pipes.
By bringing the water to the correct hardness – ideally between 150 and 400 ppm – you not only protect the technical components of your spa, but also ensure a more pleasant spa experience, less maintenance, and a longer lifespan for your system.
The W’eau Calcium Booster is easy to use, works quickly, and is suitable for all types of spas, hot tubs, and whirlpools.
⚙️ Application & use
The product is added directly to the circulating spa water. For optimal performance, follow the steps below:
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Turn on the jets or circulation pump for proper distribution.
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Add the required amount of W’eau Calcium Booster.
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15 ml increases calcium hardness by 7.4 ppm per 1000 liters of water.
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Let the filter system run for 1 to 2 hours.
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Then measure the calcium hardness again.
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Repeat if necessary until the desired level is reached.
The recommended calcium level is between 150 and 400 ppm. This depends on the water source and the specifications of your spa system.
⚠️ Safety instructions
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Always wear protective gloves when using.
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Keep out of reach of children.
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Store the product in a well-ventilated area, upright and closed.
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Always consult the label and safety instructions on the packaging before use.
Specifications
Specifications
Benefits
Benefits
Disadvantages
Disadvantages
Information and manual
Information and manual
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Read more in our frequently asked questions
What is the delivery time if I order today?
What is the delivery time if I order today?
The delivery time varies per item and is always clearly stated on the product page.
Once your order has been placed, it will be processed and shipped as quickly as possible. Orders that are in stock in our warehouse are often dispatched on the same business day.
Good to know:
- You can find the exact delivery time with each item
- You will receive a track & trace code as soon as your order has been shipped
- Delivery may take a little longer during busy periods
What are the shipping costs?
What are the shipping costs?
Within the Netherlands and Belgium, you pay €8.95 in shipping costs for orders under €75.
For orders of €75 or more, you benefit from free shipping.
For delivery to other countries, shipping costs are calculated automatically during checkout, depending on the destination and the size of the order.
What if my order arrives damaged?
What if my order arrives damaged?
In that case, please contact us immediately. We will ensure the problem is resolved quickly, for example by exchanging the item or sending a replacement part.
We strive to provide a suitable solution within 24 hours, so that you can quickly get back to enjoying your purchase.
Can I order an item that is out of stock?
Can I order an item that is out of stock?
Yes, that is possible. We can order the item from the supplier for you.
In that case, the delivery time is approximately one week on average.

