Description _x000D_Crafted from reliable and secure materials, this Air Stone boasts exceptional durability. Its purpose is to enhance the oxygen levels and nutrient circulation in your hydroponic growth system or aquarium. It is versatile and can be used in hydroponic systems, fish tanks, aquariums, ponds, and other similar systems. _x000D_Features _x000D_ _x000D_-Color:Black _x000D_-Material:Sandstone _x000D_-Size:7.50X2.00X2.00cm/2.95X0.79X0.79in _x000D_-This Air Stone has capacity for repeatedly producing a lot of small bubbles. _x000D_- You can send it as a gift for your friends who raise fish, give them a little surprise. _x000D_- It has good and relative, with high-cost performance. Good for maintaining the health of your pet fishes, make their daily life happier. _x000D_-Compatible with a wide range of aquarium sizes and styles, making it suitable for various types of fish tanks and setups. _x000D_-Suitable for both freshwater and saltwater aquariums, this accessory is versatile and can be used in various aquatic environments.Packing list4 x air stone