Black Lava Gravel 5–7mm Aquarium Substrate | Volcanic Aquascaping Gravel

Create a clean, high-contrast aquascape with Black Lava Gravel, a natural volcanic substrate sized between 5–7mm. Its deep black color and porous texture make it ideal for aquariums, planted tanks, and terrariums.

This lightweight gravel enhances plant growth while adding depth and a modern look to your setup.

Why Choose Black Lava Gravel?

• Deep black color creates strong contrast in aquascapes
• 5–7mm size ideal for substrate and top layers
• Highly porous surface supports beneficial bacteria
• Lightweight and easy to work with
• Helps anchor plants and hardscape elements

Perfect For

• Aquarium substrate or top layer
• Planted tanks
• Shrimp and freshwater aquariums
• Terrariums and reptile enclosures
• Drainage layers in planted setups

Gravel Details

• Type: Natural volcanic lava gravel
• Color: Black / dark charcoal
• Size: 5–7mm
• Texture: Porous and lightweight
• Water safe: Will not significantly alter water parameters
• Preparation: Rinse thoroughly before use

Available Sizes

Sold by weight:
• 2 kg, 5 kg, 10 kg, 20 kg

Larger quantities are ideal for full substrate coverage and offer better value.

Custom Requests

Need a specific size range or larger quantities? Send us a message and we’ll do our best to help.

Shipping & Natural Variation

Each batch is natural material. Color and texture may vary slightly.