vidaXL Black Volcanic Rocks, Natural Aquascape and Landscape Decor, Biological Filtration Rocks, Aquarium Safe - 1-2cm, 10kg Pack

The volcanic rocks are a perfect addition to the bottom of your fish tank or aquarium, helping you create a beautiful underwater world! Features: Natural material: The volcanic lava rocks are 100% natural and safe which won t affect water's pH or chemistry and are suitable for both fresh and saltwater environments Decoration: With beautiful natural shaping, the lava rocks provide a colourful and detailed focal feature to your fish tank or aquarium Biological filter: These volcanic stones make for great... - Manufacturers part number: 155317

• Natural Material: Composed of 100% natural volcanic rocks suitable for both fresh and saltwater environments without altering aquarium pH or chemistry
• Physical Details: Each black volcanic rock is 1-2 cm in size, and the total packaged weight is 10 kg
• Landscaping Applications: Not just for aquariums, these rocks can also be used for garden landscapes and planter beds offering wide applications
• Versatile Decoration: Add beauty and detail to aquariums and fish tanks with these black volcanic rocks featuring natural shaping
• Biological Filtration: Enhances water quality and oxygen levels while controlling nitrates, making these rocks an effective natural biological filter for aquariums