I'm curious as to whether an EC/TDS/PPM meter would show an increase in bio activity, since I have no idea if bacteria add to the electrical conductivity of the water.Checking at 16 hours I found good bubbling and a ppm of 690. Tomorrow morning I expect to use it. I'll see if the ppm's go up or down at 36 hours.
From wikipedia:
An increase in "dissolved ionized solids, such as salts and minerals, increase the electrical conductivity (EC) of a solution."