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

Natural material: Volcanic rocks 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 their beautiful natural shape, they provide a colorful and detailed element to your tank or aquarium.

Biological filter: These rocks serve as excellent natural biological filters, improving water quality and enhancing oxygen levels.

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

• Color: Red
• Material: Volcanic rocks
• Size: 5-8 cm
• Weight: 25 kg