So, I'm having some trouble understanding chlorine chemistry and what to do in situations. My free chlorine is sitting at 5 ppm and my total chlorine is at 10 ppm. So that should make my combined chlorine 5 ppm, if I'm understanding right. So I read that free chlorine should be higher then combined chlorine and currently I should be 5 free and 5 combined, but my total should be lower? I'm confused and don't know what to do! Help! Thank you!