There is no reason for or against air injection into a fludized bed. If you want to go thru the trouble of air injection, you may want to look into skimmer instead. Basically, use an under-rated water pump for a skimmer, and add some plastic beads into the reaction chamber so that they will stay inside... and bingo! you get a fluidized bed skimmer combo!
Can be a great marketing route... I am sure someone will buy it just like the infamous skilter.
Can be a great marketing route... I am sure someone will buy it just like the infamous skilter.