It probably started out as a pinhole leak which ran down the pipe and built up through the years.
It look like the stalactites formed from a drip from above.
Just a guess.
Just curious is the electronic ground hooked up nearby ?
jhorton1
(Jim Horton, State License #HI01100033)
8
That would be my guess also. Coming from the electric hot water heater I couldn’t remember if it was a calcium or lime that builds up in most electric hot water heaters.
Sorry, I don’t recall a ground nearby or not, but I see where your going with it.