Definition: Air lift is a filtration device that utilizes the principle of displacement for pumping water. Air forced in near the bottom of a tube immersed in the aquarium causes water to be pushed out the top of the tube as the column of air rises. Under gravel filters (UGFs) function via air lift.
air lift
By Shirlie Sharpe, About.com
Suggested Reading
Explore Freshwater Aquariums
Must Reads
About.com Special Features
Home Allergy Center
Banish mess, reduce allergens, and maintain a clean, healthy home. More >
Home Improvements Made Easy
Inspirational ideas and expert tips to help you pull off your next DIY project. More >
©2009 About.com, a part of The New York Times Company.
All rights reserved.