This aquarium bubbler is suitable for both freshwater and saltwater tanks. Its sturdy construction ensures performance, while the fine bubbles it generates help to reduce harmful gases and increase oxygen levels. This makes it excellent addition to any fish tank, providing a better living environment for your aquatic pets. Features -Color:Multi -Material:Aggregate, plastic -Size: 48.80X1.80X1.40cm/19.18X0.71X0.55in -Note: suitable for 4mm diameter hose -Simple airflow: the high-efficiency air pump provides a strong and consistent stream of air, greatly enhancing the oxygen levels in your aquarium -Versatile design: designed to accommodate various fish tank sizes and styles, allowing you to create a unique and beautiful underwater environment -Quiet operation: operates with low noise, ensuring it does not disturb the fish, providing a peaceful and comfortable habitat for your aquatic pets -Sturdy and reliable: constructed from sturdy materials, this air stone is built to last and withstand regular use without damage -Multiple uses: suitable for a wide range of aquariums and fish tanks, suitable for fish keeping, ornamental purposes, and aquatic plant growth Package list: 3 x aquarium air stone