Fish Tank Aquarium Air Bubble Aeration Tube Oxygen Pump Diffuser Accessory(18inch) Description: Our bubble tube is made of high-quality material, very safe and durable. Its air bubbles is uniform and the dissolved oxygen in water is increased, and it is suitable for using in both water and seawater. Easy to install in your fish tank, and also easy to disassemble for easily cleaning. The bubble tubes could be extended to meet the length of you fish tank, practical e. Strong suction cup also can firmly fixed the tube, the tube won't float on the water. Such a great bubble tube, worth buying for your fish tank! Features: 1. Made of high-quality material, non-toxic, safe, durable and also environmental friendly. 2. Easy to install and the air inlet head could be disassembled for easily cleaning, keeping air intake freely. 3. The bubble tubes could be extended, double tubes could be easily connected by the plastic connector, so you could connect them into a suitable length to meet the length of your fish tank. 4. With strong suction cup, it could firmly fix the bubble tube on the wall of fish tank, the bubble tube won't float on the water, practical and durable. 5. The air bubbles is uniform and the dissolved oxygen in water is increased, suitable for using in both water and seawater. 6. Can help to extend the life of air pump motor, energy saving and reduce noise. 7. Need e a pin or needle to puncture for as many small holes as needed before using. Specifications: Condition: Item Type: Fish Tank Air Pump Accessory Material: Plastic Color: Blue Optional Length: 7inch, 10inch, 14inch, 18inch, 23inch, 28inch Quantity: 1PC Package Weight: Approx. 22-45g Package Included: 1 x Bubble Tube