Just to give an update, I bought a titanium ground unit. I just installed it and I will let you guys know what happens. So far so good, but I am going to give it a while. Thanks for all your help and responses. Actually, now that I think about it, I highly recommend using these titanium ground probes on all your tanks. Current from pumps, heaters, lighting, and etc. may be coming into your tank and causing unwanted stress on your fish. All you have to do is mount the probe on the inside back of your tank with a suction cup- included- and plug the ground connector into a three pronged wall receptacle. That's it- $14.00 insurance from unwanted stress. I am going to install them on all my tanks. Late.
Jarrett