Hydroponics Growing Mediums
Hydroponics eliminates the need for soil. However, growing without soil still requires a medium which supports root systems and helps to maintain a beneficial water to oxygen ratio. Thus, a hydroponics growing medium (or “grow media”) acts as the soil-substitute in hydroponic growing systems. Note that, while the nutrient solution provides the nourishment for plants grown hydroponically, the grow medium merely provides the essential support-structure. Both components are needed for successful hydroponic gardening (aeroponics being the notable exception).
With that said, which grow mediums are available to hydroponic growers? Here are the most popular choices, followed by some top-picks in each category.