So by that logic, the higher the water absorbtion capability the better?
I assumed coco would absorb more water than hydroton, perlite or any of those other common media.
Isn't the purpose to anchor the plant and to allow water to be drawn up through the roots?
I never said anything about "better". I said there is probably just as much total water in the bottom inch of a hempy filled with only coco as there is in the bottom 2" of a bucket with rocks displacing water there.