Aerating to increase pH without interfering with TA

[Paxcou]

This morning after a big storm, the pH was pretty high (9.2). Yesterday was perfect. My TA was 90.
I thought I would lower the pH with muriatic acid below the ideal then increasing it aerating to keep tbe TA to the 70 target.
This afternoon I am where I was hoping to be :

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Test Results 06-28-2020 @ 02:30 PM
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Free Chlorine: 4.5
Combined Chlorine: 0.0
pH: 7.2
Total Alkalinity: 70
Calcium Hardness: 70
CYA: 50
Temperature: 29°C
CSI: -1.11

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Chemical Addition 06-28-2020 @ 09:06 AM
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+ 64 FluidOunces of Baume31

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Test Results 06-28-2020 @ 08:37 AM
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Free Chlorine: 5.5
Combined Chlorine: 0.0
pH: 9.2
CSI: -1.00

I have never aerated the water, I was thinking to use a air compressor. My pool being around 16.000 gallons, how long should I blow the air to go from 7.2 to 7.7 ?

 

[Donldson]

Why mess with it? 7.2 is perfectly acceptable and will likely rise on its own over the next few days.

 

[Paxcou]

It is acceptable in the lower hand. I will leave it however, for next time I am curious to know for a 16000 gallons pool and air compressor how long we should blow to increase the pH by 0.1.