uxcell Fish Tank Aquarium Airstone Bubble Wall Tube 28" Long w 3 Suction Cup Connector Inner Dia : 10mm/ 0.4";Assembly Tube Length : 70cm/ 28";Suitable for : Fish Tank, Aquarium; Tube Width : 1cm / 0.4" It's bubble disperse equally and supply is excellent.Creates an uninterrupted flow of bubbles. Aquarium Air Curtain suitable to be used for decoration and Oxygen supply in all kinds of aquariums. Can help your aquarium by providing water movement and aeration. This Aquarium Bubble Wall is suitable for fresh or salt water.