Is my chemistry ok before I add borates?


Silver Supporter
Jul 28, 2015
I wanted to add borates to my vinyl pool couple years ago and never did. Well, now I'm ready to do it by bringing down the TA with MA and aerating water to increase the pH. Here are the readings with TFT 100 kit,

FC 6.0
CC 0.0
pH 7.2
TA 60
CYA 50
CH 100

I have about 1/3 gallon of MA left, can I use it up and lower the TA further by 6- 8 points (after letting the pH rise to 7.5 or so) or these are good numbers and don't worry about lowering TA any further? Also, I don't need to address the CH but I do have some Calcium chloride, should I add some to the pool and bring up CH to 200 level? I will add granular boric acid after pH has risen to 7.5. Please let me know what do you think about my plan.

26.5K IG vinyl pool, Hayward sand filter, 1 HP pump, TFT 100 kit, stirrer


TFP Expert
Platinum Supporter
May 23, 2015
Tucson, AZ
Nah. You’ll still be able to lower TA in the future, that’s not an issue. As for the CH, with a vinyl liner it’s not a huge deal. You can adjust that whenever it’s convenient.