This took a while longer to get going because of distractions, but it's an NFT system using thin-wall drain pipe. To prevent sagging I used 2x4s. It's powered by a Harbor Freight
pump that I had to adjust output on to get a nice stream traveling down the pipe. Plants are relatively new to the system but seem to like it. It's right where I built it but next year it's going on the deck. I'm pretty happy with this one.