Hygger Hg-949 Air Pump Kit Provides A Nice Bang For Your Buck With All The Air Pump Accessories You Need Provides Instant, Powerful Flow For Your Fish To Thrive, This Mini Fish Tank Air Pump Is Strong, Energy Efficient And Low Noise It Is Suitable For Aquariums Up To 20 Gallons Specifications: Power: 1 Watt Max Flow Rate: 50Gph Voltage: Ac110120V 60Hz Noise: 35Db Pressure: 002 Mpa Air Tube: 4Mm (016Inch) Dimension: 35 X 2 X 2 In Direction: 1 Soak Air Stone For About 1-2 Hours Before Use 1 Connect Air Stone To Air Tube 2 Connect Air Tube With Check Valve 3 Connect Air Tube To Air Pump Outlet 4 Immerse Air Stone Into Aquarium Tank 5 Plug In Power Warm Tips: 1 This Air Pump Is Not Submersible, Please Do Not Put It Into Aquarium Keep It Dry 2 If Air Pump Immerse Into Water Accidentally, Please Shut Off Power Supply Immediately 3 To Get The Maximum Air Flow And Extend Air Pump Service Life, We Suggest To Clean Airline Tubing And Airstone Regularly What Youll Get: Hg-949 Air Pump Air Stone Check Valve Air Tube Manual