Abstract: A hydroponic system is disclosed that consists of a novel nutrient supply system. An air pump is connected into an air line that extends into a nutrient solution container. A nutrient solution supply line extends from the nutrient solution container, and a nutrient solution return line extends back into the nutrient solution container. The return line will be connected to the lowermost vertical extent of the plant containers and will return any excess nutrient fluid back into the nutrient supply system. A flap valve is disposed on the return line within the fluid container and will increase the efficiency of the pumping of the nutrient fluid. The nutrient solution return line, the nutrient solution supply line and the high-pressure air line are all connected into a T-connector. A small opening is formed in the T-connector adjacent the connection of the return line and the T-connector.