Ouch, shocked !!

[Doug]

Update.
The leakage from the stream pump seems to have been a major part of my problem as it wont run on a GFI / grounded circuit. Ordered a new motor block for it. Its runs flawless for 5 yrs. after getting the new impeller assembly, so cant complain.

[Myka]

Good to know you finally got it pin pointed!

[Delphinus]

Totally missed this thread. Wow, that's some (mis)adventures.

Soooo.. I'm still a little confused though. Was the Tunze not running on a GFCI originally?

Is the Korallia also leaking voltage?

Now you have me wanting to try measuring stuff with my tanks. I don't know if my forehead can stand to lose much more hair though. So if you can find a source for a rubber hat please let me know. My two year old has finally clued into the bald thing. He says to me "Where hair daddy? Where hair?" ... "Kiddo, I ask myself that everyday. Every... day... "....

[Doug]

It was on a non GFI Tony. This time, as I was moving stuff back to the 90g when it zonked my head. Thats also why my ground probe was out. No voltage with the probe in. On the cube, the Tunze was plugged in the same place, {see below for why}, and my ground probe was not installed yet, for whatever reason. And its a good thing I dont have any hair there, as it likely would have ignited .

I have to measure the Hydor again to see.

So here the thing. I have always kept one pump isolated from GFI plugs, as a last resort to circulate the tank. Plus I have two different GFI circuits on my tank. I picked the Tunze because its the best quality pump I have and figured the last one to leak. As much as I need heat, I wont use a heater non GFI or any of my cheaper equipment.
My halides are on the GFI only circuit as they trip the arc fault breaker on the other one. I,m going to now purchase a 3rd. GFI and have everything on one but three different circuits.

Perhaps just something with my particular Tunze. I still have complete faith in them and with the new motor, hope to run it another 5-10 yrs.

[spreerider]

you can get voltage in the water without a actual leak, the AC current in the motors can induce a voltage in metal equipment that is within the electric field surrounding the motor. i would check to see if the pumps are close to a motor or if your ballast is close to metal in the tank.
the reason an arc fault trips on a MH is that the MH is an arc in the tube, some larger CF's can also trip arc faults, this can be a problem if you want to use energy efficient bulbs in your bedroom.

[Doug]

Originally Posted by spreerider

you can get voltage in the water without a actual leak, the AC current in the motors can induce a voltage in metal equipment that is within the electric field surrounding the motor. i would check to see if the pumps are close to a motor or if your ballast is close to metal in the tank.

Understand what you're saying but dont follow the last part. What type of motor would the pumps be close to, exept their own. My ballast is in the stand, under the tank.

Perhaps the voltage measure from the Tunze, is created as you say but it also wont run on a GFI.

Thanks