What are common types of hydroponic systems?

The most popular hydroponic system types are deep water culture, ebb & flow, aeroponic and passive. The difference between hydroponic systems is in how the plant and root system are supported and how the nutrient solution is delivered. In “active” hydroponic systems such as ebb & flow or aeroponics, a submersible pump will typically supply water and nutrients to the root zone, while passive systems rely on gravity or wicking.