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

• Natural material: 100% natural and safe, with no impact on pH or the chemical composition of the water, suitable for freshwater and saltwater.
• Decorative: Provide a colorful and detailed element to the tank or aquarium.
• Biological filter: Improve water quality by increasing oxygen levels and reducing nitrates.
• Versatile uses: Suitable for rock gardens, planters, and decorative stones.

Color: Black

Material: Volcanic rocks

Dimensions: 10-30 cm

Weight: 25 kg