Over time, you may begin to notice small white spots on the outer surface of your ceramic filter. Far from being a problem, this natural phenomenon is a sign of how ceramic interacts with its environment, aging—and becoming more beautiful—with its own unique character.
What are those white spots?
This whitish effect is called efflorescence . It is the formation of small crystals of mineral salts present in water. When water passes through the pores of the ceramic and comes into contact with the air, these salts are deposited on the surface, creating that characteristic white appearance.
Is it toxic? On the contrary
The efflorescence is completely harmless and is a natural part of the ceramic's behavior. It does not affect water quality or the filter's performance. In fact, it's a sign that the filter is working properly, allowing the water to breathe and cool naturally—up to 5°C below ambient temperature.
How to reduce its appearance?
If you prefer to maintain a cleaner look, you can easily reduce efflorescence:
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Use a cloth dampened with water only (never with soap).
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Gently rub it over the white spots on the outside of the filter.
Avoid using detergents or cleaning products, as they could penetrate the ceramic and affect the taste of the water.
A touch of authenticity
Over time, each filter develops a unique patina. This visual patina not only speaks of use and the passage of time, but also lends a special charm to your fountain. Like earthenware pieces or antique vessels, ceramic filters acquire their own beauty, connected to nature and the inherent nobility of the material.
Take care of it, value it, and let it tell its own story.