Enhance the overall health and appearance of your fish tank with these efficient air stones. By creating a continuous stream of bubbles, they help to improve circulation and oxygenation, which is crucial for the well-being of your fish. These air stones are suitable for use in various aquatic environments, making them a versatile choice for any aquarium setup. Features -Color:Grey -Material:Sandstone -Size:3.50X2.00X2.00cm/1.38X0.79X0.79in -Optimal aeration: provides efficient oxygenation, crucial for maintaining a healthy fish tank environment -Improves conditions: helps keep clean and clear, promoting the health of life -Userfriendly: simple to install and operate, ideal for both novice and experienced aquarium keepers -Compatible with various tanks: designed to fit different sizes of fish tanks, offering versatility -Built to last: made from durable materials, ensuring longevity and consistent performance Package list: 16 x Air Stone Ball