Our fish tank bubble stone pieces are essential aquarium accessories for any fish enthusiast. These aquarium bubble stones are crafted to provide consistent and quiet aeration, making them ideal for daily use. The diffuser pad can be easily connected pump and placed in your fish tank to create a steady stream of bubbles, enhancing the oxygenation and overall health of your aquatic environment. Features -Color:Multi -Material:Sandstone -Size:8.00X8.00X6.00cm/3.14X3.14X2.36in - Suitable for hose with diameter of 4mm/8mm inner diameter - Note: Soak this product in water for 15 minutes before use! -Consistent bubble output: the aquarium bubble stones piece ensures consistent bubble output, providing a steady supply of oxygen to the fish tank -Quiet technology: designed with quiet technology, these air bubbler reduce noise, ensuring a tranquil environment for your fish -Hightemperature resistant: the hightemperature sintering process makes these air stones resistant to high temperatures, preventing deformation and damage -Effective oxygenation: these bubble stones are made from materials that effectively increase the oxygen content in the water, improving fish health -Longterm use: these aquarium air stones are designed for longterm use, offering reliable performance and reducing the likelihood of malfunctions Package list: 5 x Airstone