I just refilled my pool (recent liner change) and am beginning the arduous process of lowering the TA (My fill water is 220-230) and pH drifts up unless I get the TA down. I have done this before using the aeration method with success but this time it isn't going so well. The problem is getting the pH down to begin with. After 24 hours of adding acid a quart at a time, waiting 30 minutes, testing then repeating the pH is still hovering around 7.3-7.5 at its lowest. This after TEN qts of MA total have been added to a 26500 gal pool. I tried aerating overnight even though the pH wasn't down much, but ended up at pH 8.0 in the morning with NO change in TA.
Any tips? Should I continue to add acid aiming for 7.0 then aerate to 7.6? Or just work with the higher pH I've got and aerate from 7.5 to 8.0, then repeat?
By the way, I use the BBB method, but have not added any liquid chlorine yet. I am chlorinating with trichlor shock for now in order to help lower pH and add some CYA.
Current test results/appearance: CL 3.0, pH 7.4, TA 220, CH 50, CYA trace, Borates 0 (will add later). I used softened water (house water softener) for fill due to very high iron content (Have done this before without issue, no need for hardness in above ground vinyl pool). Water started off a little green due to remaining iron content, but iron has since filtered out, backwashed and water now looks beautiful, and clear. PH drift due to high TA is only issue.
Any tips? Should I continue to add acid aiming for 7.0 then aerate to 7.6? Or just work with the higher pH I've got and aerate from 7.5 to 8.0, then repeat?
By the way, I use the BBB method, but have not added any liquid chlorine yet. I am chlorinating with trichlor shock for now in order to help lower pH and add some CYA.
Current test results/appearance: CL 3.0, pH 7.4, TA 220, CH 50, CYA trace, Borates 0 (will add later). I used softened water (house water softener) for fill due to very high iron content (Have done this before without issue, no need for hardness in above ground vinyl pool). Water started off a little green due to remaining iron content, but iron has since filtered out, backwashed and water now looks beautiful, and clear. PH drift due to high TA is only issue.