Maybe a stupid question...help checking for voltage

[JTM4UG]

What setting do i put this on to check for voltage in my water. Had a fish die recently for no reason and i want to rule out everything.

 

[this is me]

VDC( left side) 200m. Assuming the stray voltage is in the milivolt. You can start at 200V and work your way down. The readying just be more coarse.

 

[this is me]

I hope you know what you’re doing.
one probe goes into the Ground of your outlet the other probe goes into the tank.

disclaimer: I’m not responsible for any damage that may occur.

 

[JTM4UG]

Thanks

 

[JTM4UG]

That last message has me a little alarmed. Not sure if i can reach the tank and the ground on an outlet.

 

[JTM4UG]

Cords aren't very long

 

[this is me]

 

[Casino]

Get a long piece of wire and tape it to the red led.

 

[this is me]

You need a ground.

 

[this is me]

If you don’t stick the lead into anywhere but ground of your outlet, the risk of hurting yourself is minimal. I just had to put it out there as some people might stick it into the outlet itself, which can be bad if you don’t know what you’re doing.

 

[Casino]

Oh yeah.. just like this is me said, but just tape a longer wire to the red led and into your tank and the black led into the ground of the receptacle. Any movement in readings means you have stray voltage. If it stays at zero then theres nothing.