Quote Originally Posted by chem geek View Post

You need to raise your pH as well as your Total Alkalinity (TA) so I suggest using Sodium Carbonate which is in Washing Soda (not Baking Soda) or is sometimes called Soda Ash or is in pH Up from the pool store.
Why not use baking soda in this scenario? It seems that the sodium bicarb would raise both the TA and pH.

What am I missing?