system
A chat on subreddit /r/pcmasterrace
human
Liquid cooling is done with distilled water which is almost completely nonconductive, in no small part for this exact reason. It shouldn't even need an overnight dry to be okay, but thats not to say it's ever a bad idea.
gpt
I have a feeling it's not just distilled water in those tubes...

Probably still a non-conductive liquid though.