HITOP Aquarium Air Pump...

● [Adjustable Air Volume] The air volume is inner adjustable, this function allows your fish have a comfortable environment, as different fishes, different tanks, even different seasons, asks different air volume, suitable air volume is the most favorite for your fish.
● [Ultra Quiet] This air pump adopt the latest technology to make it ultra-quiet in working, Minimum 25dB, just sound like rusting leaves or ticking watch,very quiet.
● [Longer Service Life and Safer] Traditional and reliable mechanical adjustment for the air volume, much less shakes and no electric field fluctuation, much safer than electronic adjustment, much more reliability.
● [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.
● [Eco and Easy to use] Only 3W, but with a Max flow of 4L/Min(240L/H), 16Kpa pressure; Comes with all the accessories you may need, save time and money for you.