Figure 9.8 - Aeroponics can be classified as a branch
of hydroponics, but in recent years it has become
something of a method in a field of it's own.
These systems are generally expensive and
are used by professional growers. The unit
itself can be recognized straight away by its
design. The plants are grown in a medium that
is placed into slots along a lengthy tube. The
tubes can run anywhere from 1 meter to 20
meters in length. Inside the tube are nozzles
which mist down the roots of each plant with
grow nutrients. The reservoir, which contains
nutrients, is kept outside of the tube in a
tank. The nutrients are pumped from the tank to
the nozzles and then the remaining solution
that drips from the plants is drained into
