Any one know Porosity levels?

I want to know what the porosity level of coco? Of Fox Farms ocean forest? Which one has more Porosity? Which one has more? And what medium in the world has the highest?

This will vary depending on the material and particle sizes and density. Coco coir has a very good porosity, I think sphagnum peat might be a tad less porous. I usually add coco coir to Ocean Forest.

Oh okay thanks much. The only reason I, asked is because with the 420 grow systems it said to use a soil that is at least 7.-80% porosity.