First post on the site, woohoo!
So how much bleach is too much when you have a vinyl liner? I think i might have over did it when adding "liquid shock" (12.5%) to the pool. I think the FC is hovering around 20 PPM... I think, Its the best guess i could come up with with the test kit that im using (Taylor 2005). If 20 ppm is alright, how high FC ppm could I get up to without having vinyl issues?