Aqua One Aquarium Fish Tank Coloured Gravel Aqua & Blue 2mm Aqua One Aqua Aquarium gravel is a decorative material placed on the bottom of the tank that serves several purposes. It provides a home for good bacteria that break down fish waste and other debris. Aquarium gravel, sand and stones also provides a secure place for the fish to rest and hide. Additionally, it helps keep the water moving in the fish tank and provides plants with essential nutrients. Fish tank stones & coloured gravel / sand Ideal for aquarium & vivarium use Can be used as hobby and craft material Totally fish safe with no colour leeching
