| Every Vulcano airstone is a unique, selected piece of genuine volcanic rock. By means of the internal hollwing-out of the stone, the air seeks the path of least resisance, giving a different air output at different points. Large air bubbles can thus be expelled even without the use of a powerful pump. Every stone is individually finished and tested, and then ftattened off on the undersite for easy and stable positioning. |
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Hobby Vulcano Air diffusor