Aquarist found dead

[mark]

Originally Posted by Milad

what about one GFCI on the wall outlet, one extension cord GFCI plugged into the wall outlet GFCI and one grounding probe plugged into the other socket of the wall GFCI? and everything else on the extension cord GFcI

why GFCI in series?

plug your equipment into a GFCI. Can plug in a regular powerbar into a GFCI and everything into it would be protected. If splitting load, use multiply GFCI, just not interconnected.

Ground probe doesn't need to go into the GFCI ground, any ground would do.