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

Natural material: Volcanic stones are 100% natural and safe, they do not affect the pH or chemical composition of the water and are suitable for both freshwater and saltwater environments.

Decoration: With a beautiful natural shape, they offer a colorful and detailed element to the tank or aquarium.

Biological filter: These volcanic stones are excellent natural biological filters, improving water quality, enhancing oxygen levels, and reducing nitrates.

Various uses: They are also suitable for rock gardens, planters, and for use as decorative stones.

Color: Black

Material: Volcanic stones

Dimensions: 1-2 cm

Weight: 25 kg