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  •  Hydroponics is a subset of hydroculture and is a method of growing plants using mineral nutrient solutions, in water, without soil.

  •  The word hydroponics technically means working water, stemming from the Latin words "hydro" meaning water, and "ponos" meaning labor.

  •  Two types of hydroponics, solution culture and medium culture.

  •  Solution culture types (only solution for roots)
        Continuous flow solution culture, Nutrient Film Technique (Dr Alan Cooper, 1960’s)

  •  Medium culture types (solid medium for roots, sub- or top irrigated, and in a container) 

    •  Ebb and Flow (or flood and drain) sub-irrigation
        Passive sub-irrigation, inert porous medium transports water and nutrients by capillary action. Pot sits in shallow solution or on a capillary mat saturated with nutrient solution. 

      •  Deep water culture, plant contained in a net pot suspended from lid and roots suspended in nutrient solution 

      •  Run to waste 

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