When it comes to hydroponic vegetable production the root zone environment, including oxygen levels and root temperature, play a critical role in the success of the crop. “For true hydroponics, which would include deep water culture and nutrient film technique (NFT), both have different oxygen profiles,” said Neil Mattson, greenhouse horticulture professor at Cornell University. “Typically with NFT, there is near saturation with oxygen because of mechanical aeration from the water...