How to design, build and operate a small hydroponics farm [from an urban farmers who grows over 800 heads of lettuce a year] — I do not have a green thumb. I have managed to kill the cactus in my room that I was told “is indestructible” (sorry Marge 🌵), and the pink Marigold I got from the tooth fairy when I was 11, nine days after I got it. I always thought that…