Hydroponics is a method of growing plants using mineral nutrient solutions, in water, without soil. Terrestrial plants may be grown with their roots in the mineral nutrient solution only or in an inert medium, such as perlite, gravel, mineral wool, or coconut husk
175 Watt Probe Start Lamp.• Standard Metal Halide Single Ended• 14000 Initial Lumens• 10000 Rated Life Hours• Universal Operating Position