Dual Airlift Pump

The Dual Airlift Pump allows you to water two separate things from one airlift pump, with a part just as small as my single airlift pump. It requires twice as much airflow of course, no free lunch.

The design is the same otherwise. A pair of downward-pointing tubes prevent air from forcing itself out of the airlift pump the wrong direction. They can be straight or coiled as long as they point down.

Sources at http://burningsmell.org/3d/airlift/