Help with appropriate shock for vinyl in-ground

[CarlD]

Good catch, Lisa...can't believe I did that

A lot of people are leery of testing CYA so often because they quickly run out of reagent. I simply order pint bottles of the stuff from Amato, so I don't have to be parsimonious about using it.

You can estimate how much CYA you have but it's like trying to drive down the street with a compass, a stop-watch, and a map, rather than looking out the windshield.

But we all have our different styles and Jan's been making her pool run beautifully since she was a little tyke!

Carl