<ul> <li>Includes 1 air pump, with 2 outlets, and power cord</li> <li>Pumps 275 cu. in. per minute @ 2.0 PSI</li> <li>Max water depth: 4</li> <li>3.5 watt, energy efficient design keeps your electricity bills low</li> <li>Enables nutrient aeration for healthier root systems</li> <li>Quiet operation</li> <li>Easy, no-fuss installation</li> </ul>