I am new to this game. The pool has been turned over to us for about two weeks now. My numbers are as follows: FC 3.5, Cya 80, TA 340, and PH 8.2. How do I control the TA and PH? And what dose of what, do I need to use to get these numbers down? We have a salt water pool and it is 27,000 gallons. The salt level is 3200. I appreciate the advice in advance, just trying to learn how to control it all!