Went to the pool store today to pick up Muriatic Acid. While I was there figured I would get "official" water testing done since it's been quite awhile (supposed to have "official" tests for any plaster claims is my understanding). So guy runs all the tests and then tells me I need to add 2.1 gallons of MA. 
TWO POINT ONE GALLONS! I usually add 48 oz a week and admittedly I don't test after adding MA and then by the next week the pH is back up to 8.2 so I thought well, maybe what I'm calling 8.2 is really a lot higher. But I'm like, there's absolutely no way I am dumping that much MA in the pool at once...so I'll do in batches with testing after each addition of course. I poured approx 80 oz in and then waited awhile...pH is now 6.8 
. I know, I know...don't listen to the pool store! Can you imagine what it would have been if I did what they said?! (Actually no need to imagine...looked at Effects of Adding calculator in Pool Math and 2.1 gallons would have dropped my pH to about 5. )
TWO POINT ONE GALLONS! I usually add 48 oz a week and admittedly I don't test after adding MA and then by the next week the pH is back up to 8.2 so I thought well, maybe what I'm calling 8.2 is really a lot higher. But I'm like, there's absolutely no way I am dumping that much MA in the pool at once...so I'll do in batches with testing after each addition of course. I poured approx 80 oz in and then waited awhile...pH is now 6.8 . I know, I know...don't listen to the pool store! Can you imagine what it would have been if I did what they said?! (Actually no need to imagine...looked at Effects of Adding calculator in Pool Math and 2.1 gallons would have dropped my pH to about 5. )
THANK GOODNESS you did NOT follow their directions! Also think about this..................water walking to the car, riding in the care, walking into the store=shaking and mixing=high pH than just out of the pool water.
