Here is part one, and here is part two.
Some changes we have made: Shortened the lines and added a plug.
We shortened the lines by lopping off the last two pots on each line. The directions said it could support up to 30 pots, but of course I tried to make it longer. The last bit never got enough water. That part of the bed also got too much shade, so I am converting it to a wild flower patch.