Not hydroponic, but I wanted to share this photo of lettuce that I grew under my fluorescent lights, planted on 2/6 and the photo was taken on 4/2; I've now moved the planter out to my greenhouse, where the lettuce is still going strong, and have some more started under the lights. Never thought it would grow so well under the lights, there is obviously no reason I can't have my own lettuce growing all winter!! (the varieties are Winter Density (on the left) and Black Seeded Simpson)