The ease of planting lettuce in various media with a hydroponic system.
Lettuce including vegetable plants is very easy to grow in any media, using soil media and hydroponic methods like I do this.
The type of lettuce that I planted is a type of red lettuce and what I planted is not so red because it is not exposed to full sunlight.
Lettuce exposed to full sun from morning to evening makes it taste rather bitter.