Meadowlark
I first heard of this method along time ago when I lived in Texas and saw it in use. It seems to be a simple setup. I recently built an airlift to circulate the water in my pond. Used 4 inch PVC pipe and a hot tub blower. Man does that thing move water. At first I had the tail piece too close to the bottom and it was sucking up muck and weeds like it was a dredge. (that in its self may be a different question in the near future. How to use the airlift method to deepening a pond)
Still hoping somebody can advise me on the geyser pump or the principle behind it.