GROW MEDIUMS
There are many things that could be used as hydroponic grow medium. Really anything that a plant can grow in would be considered a medium, including air (Aeroponics). Hydroponic grow mediums have to allow both oxygen and water to the roots while securing the plant into your hydroponic system. Unfortunately, there is no real answer to what hydroponic grow medium works best. It takes experimentation with different types to find what works best for you!
Many different types of grow medium can be used in hydroponics. There really is no right answer to the question of what hydroponic grow medium works the best. It varies depending on what you’re growing, the type of hydroponic system you’re using, and your personal preference. There could be several grow mediums that could fit your needs which may bring it down to price and availability. The most 7 common mediums are Rockwool, Oasis Cube, Expanded Clay, Coco Chips or Fiber, Perlite, Vermiculite, and Rock.
