My two cents on this is as follows. Switching the polarity of the plates will hurt production. If you watch the liquid while the unit is running, you will notice that the water is moving. What you are seeing is the magnetic pull of the oxygen and hydrogen particles. The hydrogen molecules are attracted to the negative plate and the oxygen to the positive. While switching polarity may knock off the bubbles that are stuck, it will probably hurt overall production. Once the polarity switch is made, the magnetic field will change directions which means the water will have to slow, then reverse its direction. I have read something similar to this recently, I just cant remember the location of the article. Of course I could be smoking crack, and dont know WTF I am talking about too......
2006 Ram, 5.9 cummins HO. 4 cell design, 1.5 LPM@30amp, 24.3 MPG