I found a link that has the instructions that are coming in the NPX bags, this is the same as what I got in mine.
http://glassbox-design.com/2010/npx-bio-beads/
In the above link go half way down the page, in the blue box is the actual instructions. Please note it says
"are best used within a fluidized reactor with enough flow to keep the top layer of Beads tumbling aggressively". I am trying to find some of the research articles I found, if I can find them again, I will paste for your reading enjoyment.
Edit: here is a Link to a great article by Grumpy Old Reefer
http://grumpyreefer.net/2010/02/08/n...-story-so-far/