Home FAQ Aquaculture How can I make a simple airlift ?

 

Place a airstone in the bottom of your tank and position a funnel with a tube extending the funnel stalk over the airstone so that the airbubbles are trapped in the funnel and forced up the stalk. The airbubbles and water mixture will rise up the extension of the funnel stalk. If the top end of the funnels stalk is above the water level the air-bubble and water mixture will rise above the water level.

The extension to the funnel stalk should have a ratio of 1 : 50 internal diameter of tube to length of tube. The maximum lift will be half the submerged length of the tube.