Stray Voltage 90V and no damaged equipments

[elysics]

rf i remove the power strip i can connect only 1 device lol

I'm thinking about the switch that i have on every power strip... and the position of every ac cable between them

But that was the point of the test, to see if only one device does it or a combination between and powerbars

 

[elysics]

And judging from what I saw in your video about the diy skimmer, that white powerbar isn't, let's say, of the highest quality or particularly resilient to saltwater, a misplaced ground could be quite likely