Deep Water Culture (DWC) is a hydroponic , and so aussi aquaponic , method of producing plant by moyen de suspending the plant roots in a solution of nutrient-rich, oxygenated water. Bubbleponics is a related method of plant production that involves a top-fed deep water culture system.
Early Deep Water Culture (DWC) systems of a five-gallon bucket, air stone, air pump and net pot with a medium. Five gallon buckets were the favorite of many early adopters of the system. Net pots come in three sizes: 6 “, 8” and 10 “.Net pots are then filled with a hydroponic medium such as Hydroton and a Rockwool cube is added in the center that holds the base of the plant.Oxygenation of the hydroponic This solution is an air pump solution.
As the plant grows, the root mass stretches through the rockwool and hydroton into the water below. Under ideal growing conditions, seedlings are able to grow a root mass that includes the entire bin in a loosely packed mass. As the plant grows and consumes the pH and EC of the water fluctuate. For this reason, constant tabs must be kept on the nutrient solution to ensure that it remains in the uptake range of the crop.
Recirculation deep water culture
Traditional methods using unconnected buckets require each bucket to be tested for pH and conductivity factor (CF) individually. This is the creation of Recirculation Deep Water Culture (RDWC) systems. Rather than having individual buckets, RDWC are linked together most commonly using a PVC pipe. A pump is also added to the front of the system that pulls water through a line of rear of the system into a control bucket. This return line has a great effect on the environment. the individual bins, including the control are aerated
Because the system is linked together, it can be done to the pH and EC through the control bucket allowing the operator to save time and maintain consistency in the nutrient solution. Potential issues with the system stem from a lack of understanding how to keep it clean.