As I had guessed this morning arrived with low temps and a Gain in output by no.10.  While no.9 is at its lowest in days.

Yet, this is totally fascinating.

One culture established in warmer temps with appropriate moisture levels from the start, no fiddling with the substrate.(no.9)

The other(no.10) established in aprox. 10degC cooler ambient temps, first incubated with excess water(~2x) in the soil until a strong fermentation was started.  Then it was cooled and the much too wet top half was removed and replaced with lightly dampened substrate.  

I'm truly curious now, if the warm fermentation period might have killed off the warmer loving soil microbes and simply made the colder loving ones go dormant?  If so, then this procedure should be repeatable.  

A mass "burn out" due to all the warm water and nutrients would explain the huge output spike and subsequent fall.  Like yeast in sugar water.

Another curiosity, if no.9 has both sets of microbes, and possibly that is why it holds its output in the cold as well as it does?

Now I've just got to decide if I want to chase the idea of cold loving fuel cells or call this cell a failure and reset it completely.