Adjusting TA with muriatic acid

[poolf7665]

Hello! So I'm starting up my Intex 3800 gal pool w/ SWCG this week. So far I've got:

TC: 2.5
PH: 7.4
TA: 170
CH: 100
CYA: 35

According to my hand little Taylor guide, TA seems pretty high and the calcium pretty low. If I add a bunch of muriatic acid to bring the TA down to, say, 100, how do I bring the pH back up to 7.4 without bringing TA up too? And if I add some calcium chloride to bring up the CH, what effect will that have on my pH?

This is my second year with this pool, and already I'm off to a better start than last year, but I've still got some stuff to learn for sure!

[Charlie_R]

Suggested reading are these two sections from the sister site to these forums, Poolsolutions.com:

http://poolsolutions.com/gd/total-alkalinity-in-swimming-pools.html

and

http://poolsolutions.com/gd/lowering-swimming-pool-alkalinity-step-by-step.html

These two sections have the information that might be pertinent to your question.

[BigDave]

Charlie_R's reading suggestions are spot-on. Id also suggest Using Muriatic Acid to Safely Lower Your Pool's pH (http://www.poolforum.com/pf2/showthread.php?13111-Using-Muriatic-Acid-to-Safely-Lower-Your-Pool-s-pH).

Don't bother with Calcium. It really only matters for concrete pools.

I worry when I hear "add a bunch of muriatic acid" add a little at a time let it mix then test again. Aeration will bring your pH back up.