voltage with no power

[BeanAnimal]

You could always do what I did. Touch the ground and stick the other hand in the tank, you will feel if there is an issue. Then continue the same thing until the while unplugging one cord at a time until the shock goes away. I did this when my lights had built up too much salt and was shorting around 80-120V to the tank depending on when I measured in the process. (I think it got a little wet while I moved stuff around and made a better connection to the water.)

BTW, this is not recommended and my chest hurt by the time I was done. I also have a very high tolerance to electricity, I can touch 120VAC and just feel a buzz while many others will feel the jolt up their arm. With this being in water though, you feel it a lot more so be careful. I am mainly pointing out that salt build-up and water splash on your lights can cause stray voltage if there is any way for the light frame to come in contact with any portion of the top or interior of the tank.

Not at all smart. Your "tolerance" to "voltage" is a figment of your imagination and you are lucky you are not dead. We are all made the same, our bodies have varying resistance based on numerous factors from diet and hydration to skin lotions and mood and the clothes you are wearing or perspiration and body temperature.

 

[BeanAnimal]

I did have the lights on. I know gfci is the way to go but do you guys worry about that thing tripping while your gone and shutting everything off?

Use multiple gfcis so that a fault or nuisance trip does not bring down the entire tank.