Something peculiar is going on here. When I opened the pool, my PH was under 7.0..
I used nearly an entire box of borax as recommended by the Pool Calculator. The next day it was around 7.3. I added a great deal more Borax, aiming at 7.6, but still only got it to around 7.4. I added Borax a 3rd time, according to the recommended dosage on Pool Calculator. Today, the PH is still only 7.2 - 7.3..
Here's the rest of my details:
Water Temp: 76
CH: Possibly very low - under 120. (This is the great unknown) I am having a hard time doing the test. I don't get the color red when I add the drops. It's more like purple. I suspect metal ion interference and followed the instructions for prepping it before hand with the reagent. My best guess is it's around 120, but I'd like to be sure before I add a bunch of Calcium. More and more, I think the low water hardness is what's causing the yellow/brown metal staining.
But what's up with my PH? Should I raise the TA?