Sir your strawberry farm is very good i have a doubt tell me what kind of arrangement you have made for pollination in polyhouse it will help me to know thank you.What is the price of this unit, what does it cost to run, how often does it need maintenance and how supported is on-going repairs and spares please?Sustainable, says he, in a huge metal structure with soilless monoculture xD. More lucrative maybe, more productive maybe, but certainly not sustainable in any way shape or form.