By far the easiest way to reduce the discharge of drain water to is to work with a high quality primary water supply and low drain volumes. Substrate design and knowledge has improved over the years.
‘Precision Growing’ literally translates into growing more, with fewer inputs. In this context GRODAN focuses on root zone management solutions, yet understands the need for a holistic approach towards the cultivation.
Did you know that growing a kilo of tomatoes in the open field requires a whopping 60 litres of water, whereas in hydroponic greenhouse cultivation it is only15 litres?