I'd like to recommend chem geek's 3 criteria for knowing you're done shocking be added to the how to shock article in pool school. I would also like to recommend, if he's ok with it, changing sparkly to clear, because I don't think my water sparkles per se. maybe it's the bird cage, I dunno, but I'm not the only one. cant-get-water-to-sparkle-t14422.html
my reason for suggesting this (besides the fact it's repeated 100 times a day, sometimes to the same individual ) is that some people fall through the cracks (example: can-t-seem-to-get-ahead-of-this-algae-t13033.html), and not everyone posts here, they simply follow pool school without having to ask for individualized help.