Feature: 1. Efficient Circulation: It can evenly distribute water flow in the fish tank, create lasting circulation effect, promote oxygen transmission and waste removal, and improve water quality. 2. Easy Installation: Aquarium water outflow tube is easy to install, suitable for all kinds of fish tanks, convenient and practical. 3. Unpowered Drive: No additional power source is needed, and the water pump in the fish tank is used to start, saving electricity. 4. Make Waves and Increase Oxygen: create dynamic water flow, provide simulated marine environment, stimulate fish activity and promote healthy growth. 5. Versatile Use: Suitable for both freshwater and saltwater tanks, this tube can be used in a variety of aquarium setups for effective water circulation. Specification: Item Type: Aquarium Water Outflow Tube Material: Plastic. Package List: 1 x Aquarium Water Outflow Tube