hey mate
Previously they had other pdf brochure that had more detail about K2 and K3, i thought i had downloaded it, had a look but couldn find it.
I was given a brochure from a New Zealand company that builds aquaculture farms, they sell just about everything thats where my black media comes from. The brochure stated that static media can trap up to 50% of 5 micron particles.
So thats why it seemed to me the idea of developing a media that would basically create a static media like environment and used in a fluidised environment was basically like expanding the static media component of a filter system. This is an attempt to understand through my logic. I should probably speak to the new zealand people to get the answer, but sometimes its fun trying to work it out ourselves on a hobbyist level
tewa