And the way it works is that there's a pump at the bottom, which periodically sends this liquid nutrient solution up to the top, which then trickles down through plants' root systems that are suspended in clay pellets, so there's no dirt involved.
Y la forma en que funciona, es mediante una bomba en la parte inferior que periódicamente expide parte de esta solución nutriente hacia la parte superior, y luego se filtra a través de los sistemas radiculares de las plantas