The suspended net pot non-circulating hydroponic systems are producing amazing, astonishing results. We've been growing all sorts of crops, both in artificial light (LED grow lights) as well as natural sunlight. The result is monster lettuce, kale, etc., producing food with almost zero effort or cost.

NO electricity
NO water pumps
NO air pumps or oxygenation
NO soil
NO weeding
NO additional nutrient inputs
NO float valves or complex parts
Almost NO care

Thanks to the non-circulating hydroponic technology -- which we first taught years ago as part of the Food Rising Mini-Farm Grow Box Project -- growing food has never been so simple and low-cost. (Also known as the Kratky suspended net pot approach.)