I am having a hard time getting my alkalinity up and for it to stay up. I got it test yesterday and it was 24.

How much baking soda can I add in one day?

Here are my numbers:

Alkalinity 24
PH 6.96
calcium Hardness 176

I had cooper - 1.30 Add some metal out yesterday

Free Chlorine 4.5
Combined Chlorine 5.35
Cyanuric Acid

The pool place recommended 30 lbs of Akalinity Increaser of 6 days and
7 lbs of Calcium hardenss over 2 days.

Thanks,

Melissa