Pettex Decorative Aquatic Roman Gravel Roman decorative aquarium gravel is the ideal way to enhance the appearance of your fish tank Chosen from selected silicate aggregates known for their inert properties in a choice of natural stones or coated in a colourfast resin for trouble free fish keeping Suitable for all types of aquarium set-ups including coldwater, tropical and saltwater Roman decorative aquarium gravel is also the perfect planting medium due to its finer size Increased surface area allows for improved anaerobic activity Will not change the PH of the water Pre Cleaned, Colour Fast Aquarium Gravel Using Inert Base Material Coated In A Slow Drying, High Bond Resign Makes This The Ultimate In Gravels Gravel Size Encourages Root Growth and Does Not Damage Fish Barbs Packaging That Sells Itself