Ok I got that Test-kit and found the pH to be at 8.4 and the TA to be at 260. I also added chlorine a few days ago and the free chlorine is at 1 and total is at 2. So its my understanding that I need to add 283 grams (~10 oz) of dry acid to bring it down to 120 then aerate to bring the pH back up. Now do I want to add that dry at once or should I add it in small doses every 2 hours or so, I just want to make sure I don't hurt the tub and pump by lowering the pH too fast.