Hydroponics is a method used by people who grow plants with the help of mineral nutrient solution and not soil. Most terrestrial plants can be grown with their own roots in the mineral nutrient solution as long as they are in an inert medium like perlite, gravel or mineral wool. This method is getting very popular nowadays because people seem to have discovered its usefulness.
Somewhere in the 19 th century researchers reached the conclusion that most pla...
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