Hydroponics is not merely a term for growing pot in dorm room closets, despite what your bleary-eyed college roommate might have told you. In the most basic sense, it’s a method for growing plants without soil, instead supplementing inert growing mediums (such as rockwool or coconut fiber) with nutrient-aided water (including, for example, calcium nitrate, magnesium sulfate, and potassium nitrate).
Methods range from basic (like the flood-and-drain system diagrammed above) to complex, but the principal benefit is control: the water, nutrients, oxygen, lighting, location—it’s all determined by you, God of Plants.
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