I recently received a shock from my aquarium. I did have a noticeable papercut on my finger (can someone give me the one second cliff notes version of why that makes a difference? would wearing gloves make a difference?).
So I purchased a digital multimeter, set it to read AC 200 Voltage (the only options it gave me were 200 & 600). I placed the black probe into my UPS and the other in various areas of the tank. Here are my readings:
- Sump 1 (0.2) = contains my skimmer, reactor and return pump;
- Sump 2 (0.0) = contains 2 heaters, 1 powerhead, and return pump,
- Main Display (0.7) = contains 2 Gyres and 2 Kessil AP700s mounted 7" over the waterline
I checked about 3 times. On the second time, I noticed a surge up to 46.8 in one area of the tank...but couldn't replicate it. It's only on this section of the tank that I get shocked, but I've been told it's all over the tank...that particular area is just where I keep making a ground connection. Here's what I was doing when I got shocked: 1) adjusting the overflow box, 2) retrieving a nori clip inside the tank, and 3) changing the filter sock in the sump which is directly below that area.
Without a consistent reading of stray voltage, how do I determine where it's leaking from?