My lettuce is growing nicely in my Gardyn 3.0 hydroponic system.
When you order the lettuce yCubes from Gardyn, they come with up to six seeds in each. It is important to thin to 1 plant per yCube. It is suggested that you place the lettuce yCubes in the peripheral. So far, I like the lettuce choices including romaine, monte carlo, flashy, red salad bowl, and butterhead lettuce from Gardyn. These lettuce choices will grow 12 inches or less.
Next time I plan to use my own seeds since I am a seed addict!