Quote Originally Posted by pmeloy View Post
I've been using pH/ORP controllers indoors for 18 years and never saw those kinds of problems. I can't even imagine how you could do that kind of damage.
Neither could the design engineers, nor the pool builder . . . which is why it happened.

The pool builder DID figure it out, after it happened, and reset the valves that led to the problem. Fortunately, I'd taken photos that showed the valve positions BEFORE he worked out what had happened, and attempted to hide his error.

Of course, it was a series of design errors that made it possible for a single mispositioned valve to result in the destruction of a pool.