Enhance your aquarium experience with this Fish Tank Oxygen Bubble Stone. Its sleek black design seamlessly integrates with any aquarium decoration, creating a visually appealing environment. This accessory is built to last, offering exceptional stability and durability. By increasing the oxygen levels in the water, it helps improve the overall health of your fish. Features -Color:Black -Material:Sandstone -Size:7.50X2.00X2.00cm/2.95X0.79X0.79in - Fish tank bubble stone is very convenient to install. It is undoubtedly suitable for ornamental fish and large fish farming. - Simple appearance, small size, and will not take up too much space in the fish tank. - Delicate and very suitable for home and park aquarium decoration. Suitable for freshwater, seawater aquariums, hydroponics or fish tanks. - The aquarium bubble stone is made of sturdy materials, strong and durable, and has a . - A great way to increase oxygen solubility in your aquarium and enliven the aquatic animals. Package list: 20 x air stone