Loud airlift, excessive gurgling?

7:12 pm in Getting Started, questions, Seeking Advice by bennett4senate

I was lucky enough to inherit one of the windowfarm systems that was used in the Whitney museum installation. It is essentially a suspended, 4-plant version of the basic 3-plant system, with the bottom container used as the reservoir.

I got it up and running today, with two plants (so far). The pump is doing fine getting the water through the system, but the airlift seems to be gurgling quite loudly, with corresponding bubbles escaping from the tube into the bottom of the reservoir.

Any troubleshooting advice for making the system a little quieter by reducing the gurgling sounds? Or if this is the level of noise that I should expect, has anyone come up with timer solutions that would allow me to reduce or turn off the pumps (especially when I’m trying to go to sleep)? I saw the Arduino-controlled timer, but don’t have Arduino skills myself…

Thanks!