Okay, so my Tunze Wavebox recently stopped working. I took it apart, tried to give the propeller a little assistance, but no luck! Frustrated, I just let it sit in the tank for a few days. Today, as I was working in my aquarium, I felt an electrical shock sharply in one of my fingers. As it turns out, I cut the nail on that finger a little short and so I was getting a shock through only that finger. I noticed that if I put only that finger in I felt the shock, but if I added my other fingers, the shock became very faint (but still there). I started unplugging all my equipment, starting with my Tunze pumps (2 x 6025 pumps). The shock was still there. I then removed my wavebox, and voila! No shock. I could put my finger in the water alone and still feel nothing.
After my fish frowned at my excitement, I began trying different combinations of my pumps to see which ones gave me the shock. As it turns out, if any one of my pumps or Wavebox are plugged in, I felt the shock. I then took the Wavebox out of the tank and put it in a bucket with FW. No shock with the wavebox off (as expected), but I did feel a shock, albeit less obvious than in the SW, with it on-- interestingly, the Wavebox began WORKING. The propeller was spinning and sure enough, I had some wave action. I then added one of the 6025 pumps into the bucket, plugged it in-- and after a few seconds-- silence. The Wavebox stopped working. I then turned of the 6025 pump and after a few minutes... the Wavebox was working normally, but I could still feel the shock.
So I'm not entirely sure why there is current leaking into my tank. The 6025's are on AC current and the Wavebox is on DC current. It seems like there's some sort of interference going on, but it's not completely evident to me what's happening. Will someone kindly illuminate what's going on and how I can get all my pumps working together in harmony? None of the Tunze equipment is grounded. Should I try to ground my aquarium?
Daniel