Okay well I fixed the badly wired outlets, and the odd voltage potentials are cleared up - glad nothing bad happened from those.
My skimmer is still still causing an issue though, so after all of the troubleshooting not being able to find a specific problem somewhere else it must be the skimmer.
Last test, before I re-post a request for a pump to try/buy
I unplugged everything inside the water and then tested conductivity between the water and the plug pins, here's what I found:
Pump, 2x Heaters, ZEOvit pump:
Ground or Neutral or Hot (from cord) -vs- sump water... Infinite Ohms (perfect)
Skimmer:
Ground -vs- sump water... 20K Ohms
Neutral -vs- sump water... 15M Ohms
Hot -vs- sump water... 15M Ohms
15M Ohms is high, sure, but there is conductivity there. 20K is very low, considering there should be no conductivity where I was measuring.
I should have done some of this specific conduction testing earlier, but first time troubleshooting something this odd there are so many things to try.
At least I resolved the Hot/Neutral mixup on those two outlets!!!!!
Now, to replace the skimmer pump.
Thanks!
Craig