Dual Air OutletThe aquarium air pump adopts a dual air outlet design, not only can supply two or more aquariums with oxygen and water, but also can position two air diffusers at different positions for more uniform oxygen distribution. Improve the efficiency of oxygen in the air entering the aquarium and promote the health of fish and aquatic plants.Powerful and AdjustablePowerful 8W aquarium air pump with strong air pressure and a maximum flow rate of 2 x 3 L/min. It is also equipped with a control knob to adjust the power and air volume according to the size of the aquarium (the air volume can be reduced accordingly at night to reduce noise), suitable for aquariums from 5 to 300 L. Quiet and ShockproofThe pump has a powerful noise reduction system, including a sturdy housing, driven by an oil-free piezoelectric ceramic plate, and 4 vibration-absorbing rubber feet. (Reminder: The larger the air volume, the louder the noise. Connecting two air hoses to two exhaust valves can reduce the noise.) [Complete Accessories] Contains 1 air pump, 2 air diffusers, 2 check valves, 1 200 cm silicone hose, 2 T-pieces for connection and a user manual. Complete accessories, safe and convenient to use. [Widely Used] Suitable for any freshwater or saltwater aquarium. Can be used with other aquarium accessories (such as sponge filters, round air diffusers, etc.). Suitable for various aquariums and hydroponic systems.