Add a pop of colour to your aquarium with the Aqua One Betta Gravel Metallic Green 350g. Gravel is an important part of any aquarium as it aids the filtration process. This gravel features an eye catching metallic sheen finish that will look great paired with other colours to create patterns in your aquarium. Pair the gravel with the Aqua One Gravel Cleaner to keep your tank in tip top condition!