On Sat, 05 May 2012 18:02:01 -0500, gonjah wrote:
I dunno, but out of curiosity, did you check the hardness regularly
before you drained it? I'd be concerned it's the plaster.

I think I'm getting closer to figuring it out.

Today I pressure washed the pool (water only).

At one point, I deliberately stayed in one spot. Guess what?

The pool plaster turned blue!
http://picturepush.com/public/8204310

That implies the white stuff is on top of the blue stuff. If that's the
case, then I need to figure out what the white stuff is.

Probably Calcium - but I'm just guessing. If it is calcium (it feels like
sand), then I 'guess' the acid wash (muriatic acid) is what gets rid of
that Calcium.

Is that correct?