Interesting! Im not sure how its so much more efficient tho! The media dosent look any more dence then the media we use in our Hobby!
Is it the process that is used thats the difference!
They showed cylenders full of water and they run large amounts of air like a bubbler at the base of the cylenders!
Even thou for the media to constantly stay in suspended in the water the media would have to be fairly light i guess!!
Any one have any ideas or insight on something i might have missed?