Always add only enough to bring your pH down to no lower than 7.0. Anywhere between 7.0 to 7.2 pH is where you want to be. If it takes 8 cups to get it there each time, then that is what you should add. I'd just use the Pool Calculator to determine what you need to get you there.
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.
Welcome to TFP! For a wealth of pool care information please check out our free Pool School. If you are in need of specific help then we encourage you to Register and ask us here in the forum!