Lower TA, accidentally put 1 gal muriatic acid

[locky]

FC = 6.0
PH = 8.2
TA = 120
CH = 300
CYA = 85
Salt = 3800

On process to lower TA by Aeration, accidentally put 1 gal of 14.5% Muriactic acid. Should I raise PH by Borax or keep aerate ?
Thx in advance.

 

[Jimrahbe]

L,

A gallon of half strength MA will reduce your pH by .8... So, if your pH was 8.2 then it will only go down to 7.4....

Even if your pH goes low for a very short time you should be ok... Just keep aerating to bring it back up

Thanks for posting,

Jim R.

 

[locky]

Thanks for your help.
Just wonder, based on pool math to reduce ph 8.2 to 7.2 it said need 1 cup 7 oz by volume of 14.5% of muriatc acid ? But 1 gallon is 16 cups ? Did I caculate wrong ?

 

[Jimrahbe]

l,

When I use Pool Math, it shows that adding 128 oz of 15% MA reduces pH by .8...

I suspect the you have your pool size set to 1,900 gallons vs, 19K gallons...

Jim R.

 

[locky]

I just double check, I set my pool 19k gallons, I used pool math app on my cell phone ?

 

[Jimrahbe]

L,

Use the pool math link at the top of this page... enter pool size at the top and then move to the bottom and use "effects of chemicals" and see what it says..

It could be that I screwed up ... Would only be the 100th time today alone..

Please let me know what you get..

Thanks,

Jim R.

 

[locky]

L,

Use the pool math link at the top of this page... enter pool size at the top and then move to the bottom and use "effects of chemicals" and see what it says..

It could be that I screwed up ... Would only be the 100th time today alone..

Please let me know what you get..

Thanks,

Jim R.

You are right, using poolmath on the link. So Android Poolmath app gave the wrong number ? Anyone using android poolmath, please double check ?
Just tested gain ===> PH = 7.2 (like you said) and TA =100.
Thanks to corrected me, I've used android PoolMath app so far ....

 

[proavia]

Just check Android PoolMath app - 14.5% MA, 128 oz, 19,000 gallon pool - will reduce pH by 0.8 -- as JimR. stated.

This matches PoolMath on website (as it should). Check to be sure you have "Effects of Adding" in the app set for gallons (pool volume) and ounces (chemical amount).

 

[locky]

Just check Android PoolMath app - 14.5% MA, 128 oz, 19,000 gallon pool - will reduce pH by 0.8 -- as JimR. stated.

This matches PoolMath on website (as it should). Check to be sure you have "Effects of Adding" in the app set for gallons (pool volume) and ounces (chemical amount).

Weird, what was wrong with my app ? Uninstall/Install again android poolmath (free version) still had a incorrect calculated result?
Are you have a free android poolmath?

- - - Updated - - -

 

[proavia]

Weird...

I set up my app to reflect 19,000 gallons. Mine shows a value from my last test in the Total Alkalinity field. I changed it to reflect your posted TA of 120 and it shows 136 oz of 14.5% MA. Have you entered all your test results into Pool Math?

If that doesn't fix the issue, send an email to [email protected] explaining the issue and provide a link to this thread. They will help get it straightened out for you.

 

[locky]

Weird...

I set up my app to reflect 19,000 gallons. Mine shows a value from my last test in the Total Alkalinity field. I changed it to reflect your posted TA of 120 and it shows 136 oz of 14.5% MA. Have you entered all your test results into Pool Math?

If that doesn't fix the issue, send an email to [email protected] explaining the issue and provide a link to this thread. They will help get it straightened out for you.

Oops, I forgot to put TA = 120.
I got the correct result now.
Thanks all for help.

 

[locky]

Today my pool :
FC = 6.5
CC = 0
PH = 7.3
TA = 70
CH = 300
CYA = 85
Salt = 3800
temp = 68 F
Should I keep aerating to adjust CSI in range or just stop and leave it like that ?
Also do we care about measure Borate?

 

[proavia]

Today my pool :
FC = 6.5
CC = 0
PH = 7.3
TA = 70
CH = 300
CYA = 85
Salt = 3800
temp = 68 F
Should I keep aerating to adjust CSI in range or just stop and leave it like that ?
Also do we care about measure Borate?

Those numbers are looking good! The scale on the test tube for CYA is not linear. You can't really estimate a level of "85". Round up to 90 if you get a reading in between 80 and 90. Maybe add 1 point to the minimum and target levels listed for CYA of 80.

What is the CSI? You can probably just let the pH rise on it's own until CSI is in the range of 0 to -0.30 ..... having CSI out of range for a few days isn't going to make a major impact - leaving it out of range for months on end is a different story.

Did you specifically add borates? If all you added was a little Borax, don't be concerned about testing for borates.

 

[locky]

Those numbers are looking good! The scale on the test tube for CYA is not linear. You can't really estimate a level of "85". Round up to 90 if you get a reading in between 80 and 90. Maybe add 1 point to the minimum and target levels listed for CYA of 80.

What is the CSI? You can probably just let the pH rise on it's own until CSI is in the range of 0 to -0.30 ..... having CSI out of range for a few days isn't going to make a major impact - leaving it out of range for months on end is a different story.

Did you specifically add borates? If all you added was a little Borax, don't be concerned about testing for borates.

CSI = - 0.81. If PH = 8.1 ===> SCI = -0.08. Can PH is 7.8 - 8.1 range (my pool) ?
I have not added any borate, read somewhere they said with 30-50 ppm borate will stablize the PH ?

 

[ping]

You need to keep the pH closer to 7.8 and the CSI will be fine. The cold water is driving the CSI down.

Borates will slow the rate of pH rise, they will not stabilize it, and you will use the same amount of acid with or without borates in the long run.

 

[locky]

You need to keep the pH closer to 7.8 and the CSI will be fine. The cold water is driving the CSI down.

Borates will slow the rate of pH rise, they will not stabilize it, and you will use the same amount of acid with or without borates in the long run.

Thanks