Soil : Some of the main things that you need to supply plants are air, water and light energy. Two of these necessities are controlled by the growing medium. I am referring to air and water.
Hydroponics: Hydroponics, term applied to cultivation of plants in nutrient solutions without use of soil.
Aeroponics: Aeroponics is a growing method where the plant roots are suspended in the air with a fine mist of nutrient solution applied either continually or intermittently over the root surface.
Bubblers: Convert any Reservoir into a simple hydroponic system. The system works by suspending the roots of the plants in fresh oxygenated water.