Plants on this conveyor belt are suspended in a nutrient solution and rotate around the room for equilateral light exposure. The nutrient solutions are all basically nitrogen, phosphorus and potassium, much like our garden store fertilizers. Each plant, depending on its particular needs gets an additional personalized recipe including minerals like calcium, magnesium, sulfur, iron, manganese, boron, copper zinc, molybdenum and chlorine. Don't you just feel like saying, "down the hatch!"? That's quite a cocktail. I like mine with an extra dash of molybdenum, how about you?