I liked the idea, but thought the bottles were too small. So I saved V8 juice bottles and built my own version. I cut a hole in one side and used a soldering iron with a fine tip to make pilot holes in the bottom of each bottle to attach a cap with a self-drilling screw.
Each bottle was fastened to a 1x2 board with another screw.
With a larger tip on the soldering iron, I melted drain holes around the spout of each bottle.
Since my greenhouse is not large, it adds some usable space for plants. Now I'm deciding what to try. So far, mini head lettuce and radishes. Might be good for kitchen herbs.
Any suggestions?
