Do I have stray Voltage?

[outacontrol]

I just went and tested mine, I have 27 volts ac from my tank water to ground.
Some from my ebo jager heater, some from the K1 and some from the K2.

Now I am interested to research this more, as an electrician 27 volts does not worry me on a safety point, but I do not think it is good. On a side note my freshwater tank has Zero volts from it to ground.