I am seeing a growing trend towards this type of innovative growing for large cities with little or no land but a want for fresh and safe food. And while I absolutely admire this type of out of the box thinking and creativity, I am always left wondering how sustainable is something like this and is the final product as nutritious and healthy as regular soil growing methods? I realize right now it might not even matter to the people doing it as the creative, fun and growing something yourself aspect is appealing all by itself. But is it a potential long term answer or more of a hobby?
It appears to be an input intensive method nutrient wise, but having really no knowledge of the nutrient side of things for these hydroponic systems I guess I don't really know. Where do the nutrients for these systems come from?
"Study books and observe nature. When the two don't agree, throw out the books" -William A Albrecht
"You cannot reason a man out of a position he has not reasoned himself into." - Benjamin Franklin
They would get their chemicals from the same place those who grow hydroponically do. On that scale it would just be a hobby but I have seen larger systems in Japan where growlights are used.... all on a commercial scale.
I am not into hydroponics ... much prefer aquaponics..... fish providing the nutrient and bio-filter of plants cleaning the water for return back to the fish....... because it is a more natural nutrient supply and fully sustainable. In watching the video I thought she could just have linked it up to a fish tank... but it takes a little know-how .... more than a capful of hydroponic nutrient.
As you do.... I admired her creative solution to her lack of fresh grown greens.