HITOP 3W Adjustable Aquarium Air Pump Product information： Power:3W ;220V/50Hz ; Suitable for fish tank size: 30-400L;Maximum air volume: 5L/Min(80GPH); Max Air Pressure: 18Kpa ; About this air pump: This aquarium aerator can effectively increase oxygen for fish tanks or hydroponics.This air pump provides all necessary accessories for use.Unique side joints wrapping design to effective reduce noise. Features of this aquarium air pump Quiet designs The soft rubber feet can absorb the vibration of the oxygen pump, to reduce noise. Thickened shell to wrap the joints on the side to prevent internal noise from spreading. Long service life The air inlet hole on the bottom of the air pump is equipped with a piece of air filter cotton that can filter the air, prevent impurities from entering the air pump, and extend the service life of the air pump. Air volume is Adjustable With adjustable knob, air flow is easy to control.this aquarium bubbler can meet your needs for a lot of bubbles or a small amount of bubbles. Details of this aquarium air pump with 2 outlets: More freedom to use. Used this fish tank air pump for two fish tanks at the same time? ok! 2outlets become single outlet? ok!Adjustable knob: Electronic adjustment knob for more precise adjustment of air volume.Soft rubber feet: Absorb the vibration when the air pump is working.Air filter cotton: Filter impurities in air, provide your fish with purer and cleaner air. What will you receive？ Aquarium Air pump and the accessories kit： Air Tube（1.5M*2） / 2 * Check Valves / 2 * Air Stones/2 * Spare Regulating Valves / 2 * Suction Cups / 1 * T-Connector / 1*Spare filter cotton