Hi Ken,
 
Just want to ask, i own a silver puppy, when i set a gallon of distilled water 
to brew, its light  turns green.  After around four + hours it turns red, when 
i check the ppm it is only 3.5ppm (water before brewing is 1.5ppm).  So in all 
that time i only made 2ppm?  Then i shut it off, and when i restart it, it 
turns green again.  The setting is always at manual-auto.  Is this a normal 
occurence in brewing one gallon?  How long should a one gallon normally brew?
 
BTW, the electrodes are super clean and so with the jar and round plastic for 
distance.
 
Thanks.
 
Melly