Lowering PH seems to lower Alkalinity and Vice-Versa

[bmbouter]

I mostly follow nitro's approach to water chemistry for my 350 gallon hot tub. I use the Taylor test kit and for the most part everything is fine. What I've noticed though is that when I want to raise the TA with baking soda, I also end up raising the PH. Then when I go to lower the PH with this it also lowers the TA. I've usually settle for a TA of 60 and a PH of about 7.9. Overall this gives me a CSI of 0.05 which I think is pretty great and it stays very stable, but my understanding is I should have my TA higher, like 100. So two questions?

What do folks do to raise their TA without raising their PH?

Do you think I should have my TA higher?

Thanks in advance! This forum is great!

[RDspaguy]

Have you read the other sticky threads on this subject in the chemistry section?

https://www.poolspaforum.com/forum/index.php?/topic/52522-some-truths-about-ph-and-ta/&do=getNewComment

 

[bmbouter]

I did I read that and maybe 4 other posts. My main takeaway was that I should focus on TA and use that to adjust my PH. In practice though it seems that if I use a PH as an indicator of a healthy TA then my TA will end up around 60 and I've also been told from Nitro's guide that my TA should be around 100.

[RDspaguy]

I don't even test for TA. Adjust ph and let TA fall where it will. 60 is fine.