For those who use grounding probes - one or two ?

[Idech]

I don’t want to start the « probe, no probe » debate, it’s been done over and over again.

All my outlets are GFCI and I currently use a grounding probe in my DT (don’t have a sump). I’m upgrading to a new tank with sump and will be putting my ground probe in the sump.

Here is my question : do I need another one for the display tank or will the one in the sump take care of the DT as well ?

Thanks

 

[KrisReef]

If your return pump is running the water should provide a conductivity bridge from the sump to the DT. When the return pump isn't running the DT may not be connected to the sump?