Make a bold statement in your aquarium with Oceanmax Volcanic Grey Fish Tank Substrate Stones. This 1kg bag contains distinctive 3-5mm artificial gravel in a deep volcanic grey color, providing the perfect backdrop for colorful fish and vibrant plant life. Ideal for contemporary aquascapes, the stones add dramatic contrast and depth, helping create a balanced and eye-catching tank. Easy to clean and suitable for all freshwater setups, this decorative substrate supports plant rooting and healthy aquarium environments.