A hydroponic growing system having multiple growing units, wherein each growing unit includes a container for a plant. The growing units are linked through a water recirculation system. The water recirculation system includes a sprayer located on an upper, inner portion of the growing unit above a water level. Water is sprayed downward onto the water surface and plants creating increased levels of oxygen for optimal growth. Each growing unit is connected to a water return channel that directs water to a water pump to circulate water throughout the system via a pressurized manifold system. Sprayers are connected to the manifold for introducing water into the growing unit. The system delivers limitless oxygen to roots and can produce healthy plants with fewer nutrients than conventional systems. The system provides increased oxygen levels such that plant life can thrive, even in less than optimal conditions.