These aquarium air stones are crafted to provide efficient aeration for your fish tank. By producing a fine mist of bubbles, they help to increase the oxygen content in the , which is essential for the well-being of your fish. The durable construction ensures performance, making them a reliable addition to your aquarium setup. Features -Color:Grey -Material:Sandstone -Size:3.50X2.00X2.00cm/1.38X0.79X0.79in -Optimal oxygen supply: provides a steady supply of oxygen, essential for the wellbeing of your fish - quality enhancement: helps maintain optimal conditions, reducing harmful substances and promoting fish health -Userfriendly design: easy to install and operate, suitable for both beginners and experienced aquarists -Wide compatibility: fits a range of fish tank sizes, offering flexibility and convenience - materials: constructed from durable materials, ensuring longevity and consistent performance Package list: 80 x Air Stone Ball