Create a stunning visual effect in your fish tank with our bubble stones. These air stones produce a steady stream of bubbles, enhancing the aesthetic appeal of your aquarium while also improving water circulation. for all types of aquariums, they are a must-have for any fish enthusiast looking to maintain a vibrant aquatic environment. Features -Color:Black -Material:Sandstone -Size:4.00X1.50X1.50cm/1.57X0.59X0.59in -Optimal oxygen levels: increases dissolved oxygen in the water, supporting the health and vitality of your fish and aquatic plants -Uniform bubble release: distributes bubbles evenly to prevent oxygen imbalances, ensuring all areas of the tank receive adequate aeration - design: suitable for various aquarium setups, including freshwater and saltwater tanks, making it a practical choice for all fishkeepers - build quality: crafted from durable materials that resist damage, providing reliable performance for extended periods -Effortless integration: designed to pair seamlessly with air pumps, enhancing oxygen and maintaining a clean aquatic environment Package list: 30 tank aerobic stones