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The word “hydroponics” comes from greek “hydro” – water and “ponos” –  work that can literately be translated as “working water”. In hydroponics plants are grown without water but with the help of nutrient solutions that contain all the necessary elements available for plants to absorb them while being in right concentration. Plants' roots are hold in the substrate that does not have any impact on the plants nourishment. Sometimes there is no substrate at all.

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