Decorative aquarium gravel is the ideal way to enhance the appearance of you fish tank. Made from silica aggregates known for their inert properties and coated in a colourfast resin for trouble free fish keeping, this gravel is suitable for all types of aquarium set-ups including coldwater, tropical and saltwater, and is also the perfect planting medium due to its finer size. Suitable for bottom feeders and barbed fish, it will not change the PH of the water.