The Asian vegetable industry in Australia has grown rapidly and currently contributes about six percent to the value of the broader vegetable industry. The fast development of this industry is due to the increasing use of hydroponic systems for plant production. This guide has been written to help growers of leafy Asian vegetables better manage the nutrition of their hydroponic crops to maximise yields and to improve the efficiency of their production systems. This guide describes several hydroponic systems and how to manage them for growing a range of leafy Asian vegetables. It also describes symptoms of nutrient disorders and how to correct (and prevent) these in hydroponic systems.