Hydroponics is a subset of hydroculture and is a method of growing plants using mineral nutrient solutions, in water, without soil. Cannabis plants are grown with their roots in the mineral solution only, or in an inert medium, such as perlite or gravel. The nutrients in hydroponics can be derived  from sustainable nutrient rich sources resulting in eco friendly considerably healthier & heartier plants that are higher in potency and free of harmful toxins.