I know I know. Leslies is garbage. I like to bring in samples sometimes to compare to my tf-100 kit. I also like leslies test strictly for ph since the color matching is difficult. Anyways. Leslies says my FC is .6 and my CC is 4ppm. is this even possible? leslies told me to shock the pool (every time I get advice from them I just smile and nod) but I wanted to lightweight argue with them and say that those readings aren't possible. I added chlorine yesterday and my test kit says 4ppm FC and 1 drop CC (.5ppm). seems like they got it backwards but it's a machine that calculates it. I guess my main question is if 4ppm CC is even possible with .6ppm FC? I'd like to add this is good evidence not to trust leslies test and definitely don't take their advice. they want me to shock me pool right now when it's perfectly balanced