[craigwmiller]

There is no stray voltage that I can detect. I get 0.00 volts from the sump or DT to several different circuits' grounding pins.

I *do* normally have a grounding probe on my system -- but I also have 4 GFCI circuits powering the system, (I would never ground a conductive system without upstream GFCI protection). I also tested 0.00 volts and 0.00 amps before I put the grounding probe into the system. As for a 'bandaid' -- it should not be considered a bandaid ever, if one has > 0.00 volts of stray voltage, the solution is to fix the problem first.... The grounding probe will help save your life by causing your GFCI to trip should any future problem occur. (if you put in a grounding probe without GFCI, current will flow freely, and this is very dangerous)

(but please note the voltage & current testing was done with the grounding probe disconnected)


The issue I am having is odd and though it is directly related to my skimmer, my pH probe is the only thing that seems to notice it, and only when the system is grounded via usb to my PC. Even though the water is also grounded via a grounding probe (or not).

I'm going to continue my measurements -- but 0 means 0 in my books, and if I can't find anything, there might not be anything to fix -- possibly I have some static generated via the usb connection or something that is causing me grief -- so maybe a usb isolator??!!