A modular hydroponic growth system and method for applying the system having a central nutrient solution and nutrient reservoir that feeds nutrient solution and nutrients to one or more growth modules. A wall of the growth module is adapted to be removed to allow unimpeded access along a side of the box whereby trays may be inserted and removed without raising the bottom of the tray higher than required to clear an interior bottom surface of a cultivation chamber growth module. An additional germination compartment of the growth module supports simultaneous germination of seeds while another growth compartment of a same box supports growth in a second vessel, whereby ambient light is received by plants in the second vessel. An optional light filter screen provides varying filtering of the second vessel by selectively positioning a unified screen having two or more sections of varying strengths of light.