I am crazy busy, but I have begun my window farm journey 2.0.
Here is my design for the airlift. There is a screw-in connector in the bottom of the reservoir, which goes to the T connector which needs to be lower than your water level. The lower you hang the T the better.
The top of the T goes up to the top of the window farm, and the other end of the T goes to the airpump with a control valve on it to reduce the flow.
This set-up works way better than the coil in the bottom of the reservoir.