grounding

Hi everyone — I’m building a DIY reef controller using an ESP32-S3 and could use some guidance from anyone with electrical/analog experience. pH measurement (Main Question) I’m trying to design a safe, robust pH input circuit that interfaces cleanly with the ESP32-S3 ADC, but I’m a bit lost on...

I’m experiencing an issue when I connect the grounding probe to the outlet and touch the water barfoot. Surprisingly, the water shocks me, and there’s no GFCI trip or anything. However, when I unplug the grounding probe and touch the water, I don’t feel anything. I’m curious to know why I only...

Hi so I added a new automatic water changer and noticed when I put my hand in my tank I can feel a slight electrical charge. And if I have a cut then I can feel pain on the cut. I have used a multimeter and I have around 22 volts in the water. If I turn off the water changer I don’t feel the...

Hi! Is there anyone else with a Profilux controller powered up from ungrounded socket? I have recently purchased Profilux 4 Mega Set, all seems to work as expected, except for the conductivity probe, which measures weather on the moon - the reading swings anywhere in the 0.99 to 1.035 water...

So I have known I've had some voltage in my tank for a while now but can't really seem to do anything to cure it. I am using a digital multimeter to read out ac voltage. Currently I have a grounding probe in the tank as with all my equipment on I hit about 60 volts without it in (with it in I am...

I have a titanium grounding probe that I always placed in my sump. Seeing as I am rebooting my 125 gal, I am wondering where everyone places their probes. My reasoning for placing the grounding probe in the sump is my hands are mostly in the sump during maintenance and so long as the main pump...

I have a titanium grounding probe that I always placed in my sump. Seeing as I am rebooting my 125 gal, I am wondering where everyone places their probes. My reasoning for placing the grounding probe in the sump is my hands are mostly in the sump during maintenance and so long as the main pump...