I've been using 8.25% bleach as my chlorine source for the last couple of weeks after coming out of a situation in which CYA got too high after trying to combat an algae problem. I now use a TF-100, and the CYA/chlorine chart said to keep FC around 6 with my current CYA level of 50. Each time I add more bleach to get my FC level up, it raises my pH as well. I'm concerned about raising my pH too high. I've never had to lower my pH (challenge has always been keeping it up to a good level), but if I start using muriatic acid to lower it, will that affect my FC level?