hitop dual outlet aquarium air pump, whisper adjustable fish tank aerator, quiet oxygen pump with accessories for 20 to 100 gallon (2 outlets) hitop <p><b>our advantages:</b></p> <p>manufacturer direct selling, better professional support.</p> <p>super simple installation.</p> <p>our aquarium air pump is ultra quiet,and it pumps a good amount of air into the tank, makes your aquarium more vivid.</p> <p>equipped with 2 high-efficiency air stones, puts off a nice spread of bubbles at a pretty good pace, which will makes your fish or shrimp love it. also come with a replaceable air intake cotton, makes your air pump work in a good condition for longer time.</p> <p><b>item dimension:</b><br></p> <p>13*5.7*7cm/5.1*2.2*2.8in</p> <p><b>package including:</b></p> <p>2 x return valve, 2 x air stone, airline, connector, air filter cotton</p> <p><b>parameter:</b></p> <p>power: 3w, 120v/60hz</p> <p>flow: 4l/min</p> <p>pressure: 22kpa</p>