While there are a lot of different ways design an N.F.T. system, they all have the same characteristic of a very shallow hydroponic nutrient solution cascading downward through the tubing. Where the bare roots of the plants come in contact with the water, and can absorb the nutrients from it. Among many of them Nutriculture and Platinium are a very profitable and reliable. By far the most popular form of hydroponics, tried and tested for over 20 years with spectacular results.