Uniclife Aquarium Air Pump, up to 10-40 Gallon, Silent Fish Tank Oxygen Pump with Air Stone and Silicone Tube Perfect for small size and medium betta tanks or nano aquariums up to 20 inch deep, Tank Capacity: 10 Gallon Air Flow: 0.24 L /min, Pressure: 0.01MPa, Power: 1.5 Watt Ultra Quiet -Less than 33dB Compact design and lightweight, only 1.2oz Full 12 Months Warranty and Free lifetime technical support from Uniclife.