We've been doing a lot of container gardening lately, and have been thinking about making a system like this. The 'air lift' water delivery system looks partic

We've been doing a lot of container gardening lately, and have been thinking about making a system like this. The 'air lift' water delivery system looks particularly inteesting, but kind of Rube Goldberg-ish. I'd be very interested to hear experiences from anyone who has actually built one. How well does it work?