Titanium grounding probes require you to have a grounded (3 prong) outlet which is connected to a properly grounded circuit. My guess is you're connecting your power strips to a 2 prong outlet via an adapter, and then connecting all your 3 prong power cords to the power strip? In that case the grounding probe will not do anything, except maybe trick you or others that it is doing something, and catch you in a bad way.
Grounding requires an entire electrical setup to be in place. It usually starts with a rod hammered into the ground outside your house, connected to an electrical circuit box, which has 3 strand wires running from it, to the outlets and lights and switches throughout the house.
2 prong outlets are all you need for delivering power, but are not grounded. That's the old standard from a long time ago. The new standard is grounded circuits, but again getting there fully requires a large rewiring job of a place.
You can however get safety improvements by installing a 3-prong, GFCI outlet, and leave it ungrounded. That can reduce the chances of getting major electrical shocks, because the outlet should trip when that happens, but doesn't actually ground anything.
That all may not mean anything to you, but if you Chatgpt/Gemini for info about 2-prong, ungrounded, outlets and dealing with a saltwater tank you'd likely get a bunch of info. Ask it to explain it in simple terms.
My experience with this was previously having a bunch of old electrical, and separately having a similar issue once with a 3d printer. Turned out the outlet I was using hadn't been installed right, and wasn't grounded, so the small amount of current it was leaking into the frame could shock me. Once grounded that went away (let's ignore the bad state that it shouldn't have been leaking current).