spectralwarp

https://en.wikipedia.org/wiki/Single-wire_earth_return

There is a lot of great information at https://www.poolspaforum.com/forum and https://www.troublefreepool.com/forums/ particularly from user 'chem geek'. This is where I was able to finally get a better understanding of pool/spa chemistry and figure out a routine that works for me.

This isn't a solution for most, but if you know your way around XCode, you can build https://github.com/libretro/RetroArch for any iOS device without the need for jailbreak. The repo contains working xcode projects (though it still may take a little tinkering...) I even got it running on my appleTV!

Congratulations, that is a great achievement!

Reverberation: 2.b. An echolike force or effect; a repercussion: Reverberations from the stock market crash were still being felt months later.

http://www.thefreedictionary.com/reverberation

It has been shown that accidents can occasionally hurt innocent people.