Grow Media - Part 1: Roots & Your Grow Media

Your Grow Media.  Octopot Education:
The foundation to a successful grow with massive healthy roots, and hence a massive healthy plant, is your grow media.  This will be a four-part series on understanding your grow media, the various systems used, and what inputs are available that may work best with your Octopot.  But for now let's take a look at the first part of learning about grow media.  What is it and why should we care?