The HuDieM air pump is designed to oxygenate your aquarium efficiently and quietly with its low power consumption and advanced air compressing system.Specification:Power rating: 8WRated Voltage: 110VMax pressure: 0.02MPAMax displacement: 110GPH( 3.5*2L/min)Size: 5.5*3.15*2.17 inchAir stone OD: 0.98 inchThe power cord length: 3.6 ftAdjustable air flow knob: BlackPackage weight: 1.5 poundsThe length of the tube: 2*3.28ft ,OD=0.24 inchFor 20 to 120 gallons aquariumsPackage Include: 1* Aquarium Air Pump 2*Silicone tubes2* Return valve2* Air Stone Important Note: 1.The air pump cannot be used in water or outdoor2.The quantity of bubble is related with water volume. The deeper water, the bigger air pressure and the less bubble. 3.Remember firstly taking out the power supply when it is dropped into water because of careless4.Remember firstly taking out the power supply when find it has the phenomenon of leakage of electricityHow to use:Cut the tubing to the required length. Connect the tubing to the pump and your air stone. Plug in. Simple.We just ensure that the pump is never lower than the tank. If that is not possible, fit a check valve to stop any water flowing back from the tank into the pump!
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