In Aeroponic propagators plants are suspended in neoprene discs, with their roots hanging in the air over a tank filled with a nutrient solution. This nutrient solution is sprayed onto the roots via sprinklers, resulting in high exposure to water, oxygen and nutrients. The effect of having almost unrestricted access to oxygen is that your plants will grow at exponential rates. Furthermore, your plant's roots will develop quicker, meaning you can cut the amount of time your plants spend as seedlings. Aeroponic propagators are available in either heated or unheated versions and can accommodate 12, 20, 40, or 120 plants.