I realize that this is a total newbie question, but I'm really confused.
If my daily Chlorine OT tests only for TC, how do I know how much bleach to add if the amount is based on FC? Do I need to the DPD test every day to figure out how much FC I have?
If my daily Chlorine OT tests only for TC, how do I know how much bleach to add if the amount is based on FC? Do I need to the DPD test every day to figure out how much FC I have?