Question Re Balancing Water

[Quickbeam]

I just recently did my first water change and would like to get some advice re balancing my water.

My numbers are as follows:

PH - 7.6

TA - 30

CH - 130

I know that my TA is low, but it needs to be at 30 for my PH to stay stable during aeration. My TA was also at 30 during my initial fill. Given the numbers above, my Saturation Index is just under -0.5 (our hot tub is at 101 degrees), which puts my water out of balance. I could raise my PH to 7.8 which would bring me in balance but Im wondering if I really need to, as I am thinking a PH of 7.6 is a pretty good number. I remember that Chemgeek had once said that with an acrylic shell tub with no exposed plaster or grout there is no real need for having the CSI be near zero. So my real question is, should I leave my PH at 7.6, or should I add some borax and try and bring the PH up to 7.8?

[chem geek]

Same question was posted and answered in this thread on another forum.

[dlleno]

just FYI, my TA drops to 30ppm when my water is new, and this is a consequence of controlling pH rise with dry acid. low TA is just a requirement to avoid pH rise -- you just need to watch out to insure that it does not go too low, or you risk a precipitous drop in pH.