Greg,
   
  Stirrring was introduced back in 1999, as the silver ion concentration will 
build up between the electrodes and the current reading that you get is not 
idicative of what is actually in the brew cell.
   
  When the current density gets much above 1 ma per square inch of wet anode 
electrode then agglometation  get to strong and yellow color developes.
   
  "Ole Bob"

Greg Ball <[email protected]> wrote:
        I have never seen anywhere that I need to stir. What is this about? 
Also, what is 1 mA per square inch of anode area? Translate please. Thanks!