I'm adding a lot of CYA since my level was 0, close to 12 lbs (added 6 lbs so far, doing 2 lbs at a time).
According to the pool calculator, this will lower my pH by 1.3. I tested my pH tonight and it's already down to 6.8 or below. Should I be dumping a whole lot of borax in to counteract this? Should I do it now or wait until I'm done?