Xiaoyztan 3.9 Ft Length Flexible Bendable Air Bubble Wall Oxygen Diffusing Hose Hydroponics Pump Accessory For Aquarium Fish Tank

Specifications: Material: Rubber Plastic Color : Black Tube Diameter(Approx.): 11mm/0.4 Tube Length : 1.2M/3.9Ft Fit for Hose Inner Diameter : 5.5mm/0.2 Weight : 5oz/pc Package content: 1 x Air Curtain Bubble Tips and Steps: 1. Firstly connect rubber hose to the check valve outlet with 5.5mm air tube then connect it to the air pump with 5.5mm air tube and steep it into the water. Once power on equal bubble can be dispersed immediately. 2. After being used for a long time the holes on the surface might be locked. Immerse it in hot water water for about 8 minutes then use brush or cloth to rub the surface slightly. A single head means at one end is air holes the other end is sealed. NOTE: Size for manual measurement there may be a 1 to 2 cm error belongs to the normal phenomenon. And due to the difference between different monitors the picture may not reflect the actual color of the item. Thank you.