Hydroponics is

Hydroponics is Soil-less cultivation of the plant.
Hydroponics is a type of horticulture and a subset of hydroculture that involves growing plants, usually crops or medicinal plants, without soil, by using water-based mineral nutrient solutions in aqueous solvents.
The nutrients used in hydroponic systems are different organic or inorganic sources, including fish excrement, duck manure, purchased chemical fertilizers, or artificial nutrient solutions.