https://www.youtube.com/watch?v=jSLheMuA2n8 Who Needs Soil When You've Got Water? Proper water levels are required by plants to deliver the nutrients and other building blocks for fast, healthy growth. Give them too much water, and plants will literally drown. Give them too little, and plants will wilt and dry; there's a healthy balance. In addition, different plants prefer different watering conditions. Lettuce...