Need help with acid addition

[ksteber]

How much of this do I need to drop my pH to 7.4? I don’t know what to select on Pool Math to figure it out.

 

[tim5055]

Low fume is 15.7% Muratic acid

 

[ksteber]

So 41oz then?

 

[tim5055]

I don't know. You only said what you wanted to get to, not where you were starting.

 

[ksteber]

Sorry. Thought you could see my pool math results. I’m at 7.8

 

[tim5055]

Nope, can't see them.

How many gallons is the pool?

 

[ksteber]

13500 gallons. Vinyl.

 

[tim5055]

I get 41oz of low fume.

But, why? Your TA is high. Wait until pH is at 8 and then bump it down to 7.2. That will start bringing your TA down where you want it.

 

[TonyM]

Adding 45 oz of 15.7% will lower the pH by .4. I would add about 36 oz, let it run for ~30min then re-check and add more if needed.

Edit to say: I only plugged the acid numbers in to check the change - did not look at the rest of your levels