Stray Voltage Question

[Stones]

No problem. I used a standard mastercraft voltmeter set to the 200V AC setting. On my meter it looks like this:
~
V

If your meter has a lower setting, you could probably use that to get better resolution but as it is, it gave me an accuracy down to one decimal place(pending the voltmeter is actually calibrated correctly)

I put the probe from the V/Ohms/mA port and placed that in the water running through my sump, and placed the ground probe in the ground socket of my powerbar that my skimmer pump runs on.

After leaving the probes in the water for a while, the voltage would fluctuate from 1.9 V up to 3.6V depending upon what electrical appliances were running at the time.

Hope this helps