HITOP Aquarium Air Pump with Accessories, Silent Oxygen Pump for Aquarium, Whisper Aerator for Fish Tank 30L to 400 Litres (BLACK -GRAY)

[Wider adjustment range] In addition to the inner adjustment knob, this fish pump is equipped with spare regulating valves, which can adjust the air volume more accurately. So the air volume range can reach 1L- 5L, suitable for 30L- 400 liters sea water and fresh water fish tanks. [Ultra-Quiet] This air pump adopts the latest technology to make it ultra-quiet in working, Minimum 40dB, just sound like rusting leaves or ticking watch; Moreover, we use an extra thickened shell to wrap the joints of the body of the air pump, to eliminate the noise further. [Replaceable Air Filter Cotton] The air filter cotton is replaceable easily, keeping delivery of clean oxygen to your aquarium, while also ensuring a more stable gas output. [Dual-outlets and more usage] This air pump can aerate two air stones at the same time, it also can be converted into a single outlet through the T-connector. [Eco and Easy to use] Only 3W, but with a Max flow of 5L/Min(300L/H), 18Kpa pressure; Comes with all the accessories you may need(4.9ft air pump Tube*2, Return Valve*2, Air Stone*2, Spare Regulating Valves *2, Suction Cup *2, Air filter cotton*1, T-Connector*1), save time and money for you.