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Guemmer-Sand is due to its intense black colour perfect for high contrasts in your aquarium. It increases the natural colours of your plants and fishes in a natural way. Furthermore, the sand is water neutral, which means that the water values do not change undesirably. Thanks to the rounded edges, there is no risk of injury to fish or invertebrates on this substrate. This grain size is also called aquarium bravel which improves the watercirculation through the ground that is highly recommended if you want to use soil as a filter and a groundheater can only function best with bravel.
- Water neutral, black soil
- Grain size: 2,0 - 3,0 mm
- For high contrasts
- No risks of injuries because of its rounded edges/li>
- Perfect for fishes, aquatic invertebrates and plants