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In its most basic form, hydroponics is the practice of growing plants without soil.
Whether you decide to use in-ground or above ground containers for your hydroponics system, you’ll need to decide between open and covered designs.
While a liner might be a requirement for any custom made hydroponic tank or raceway, that doesn’t mean you can use any pond liner you can find.
While some of the original hydroculture experiments and related ancient methods used open waterways for growing, most modern hydroponics systems rely on pre-fabricated tanks, pipes, troughs, and similar containers.
As one of many branches of hydroculture, hydroponics is an umbrella term covering many related but distinct techniques.
With thousands of years of history behind the use of traditional soil-based, it might be surprising that anyone bothered to develop a method of growing crops in water instead.