Aqua One Natural Gravel is an all natural gravel for your aquarium. With no artificial colouring it's safer and healthier for your fish and aquatic plants, while creating an authentic and natural environment in your tank. - Suitable for: Coldwater, Tropical and Bettas - Features and Benefits - No artificial colouring so it's safer and more natural - Can be used in aquariums, bowls and vases - Mix and Match with other gravel from the Aqua One Range