Our aquarium oxygen diffuser piece is designed for daily use, ensuring your fish receive a constant supply of oxygen. The round base bubbler pad is easy to clean and maintain, providing a reliable and efficient solution for your aquarium needs. This fish tank accessory is essential for promoting a healthy and vibrant aquatic ecosystem. Features -Color:Black -Material:Sandstone -Size:16.00X13.00X2.10cm/6.29X5.11X0.83in - Suitable for hose with diameter of 4mm/8mm inner diameter - Note: Soak this product in water for 15 minutes before use! -Uniform bubble output: the aquarium air stones pieces are crafted to ensure uniform bubble output, providing consistent oxygenation for your fish tank -Silent functionality: these air stones are designed with silent functionality, reducing noise and creating a peaceful environment for your aquatic pets -Hightemperature : the hightemperature sintering process enhances the durability and performance of the air stones, making them ideal for any aquarium -Aesthetic enhancement: the stylish design of the air stones adds a decorative touch to your aquarium, improving its overall -Quick and easy installation: installation is a breeze; just connect the air stones to an air pump, and they are ready to provide optimal oxygenation for your fish tank Package list: 2 x Airstone