Volcanic stones are the perfect addition to the bottom of a fish tank or aquarium, helping to create a beautiful underwater world!

• Natural material: 100% natural and safe, they do not affect the pH or chemical composition of the water, suitable for fresh and saltwater.
• Decoration: With a beautiful natural shape, they offer a colorful and detailed element to the tank or aquarium.
• Biological filter: They serve as excellent natural biological filters, improving water quality and enhancing oxygen levels.
• Various uses: Suitable for rock gardens, planters, and decorative rocks.
• Color: Red.
• Material: Volcanic stones.
• Dimensions: 10-30 cm.
• Weight: 25 kg.