Really hot weather

[PoolStored]

pH rises the fastest when pH is low and/or TA is high. You reported TA of 300 before. Your reduction of pH reduced the TA. Aeration and high TA cause pH rise.

When you reduce pH with acid, you also reduce TA. When you aerate, or allow pH to rise, TA will not also rise, it will stay the same. You are making progress.

Continue lowering pH to 7.0 and aerating. Everytime you do, your TA will reduce. When TA gets to about 80, stop forcing pH to 7. Only reduce it to about 7.8 and it should be fairly stable.

What is the TA of your fill water?

 

[daisylubob]

Fill/tap water is 300. TA yesterday was 250.
So it’s evening, 6:30. Do I attempt to get the pH down tonight, And aerate all night with the cover off? Or wait til the morning? So many unknowns…..

 

[PoolStored]

Doesn't matter when you do it...up to you...

With fill water being TA of 300, you will need to find a reliable way to aerate.

 

[Sunnydaze]

Yesterday I got the pH to 7.0, and aerated all night with the cover off. I put the cover on this morning, stopped the aerator, and then We got a ton of rain. And it’s been very windy all day.
I tested just now. pH is 7.8, TA is 200. Why and how did pH go up so quickly ????? And what is next action? Take cover off and keep aerating? Get pH back down? Frustrating.

The TA did not decrease from 300 to 200 by knocking the pH down to 7 one time. It will go down by approximately 10ppm, give or take each time. There must be an inconsistency in the testing.

 

[daisylubob]

Ran the aerator all night after getting pH to 7.0.
Today pH is 7.0 TA 150 FC 6. Added M acid, and will start aeration once pH gets to 7.0 again.
Once the TA is at normal levels (60-90) will it remain there, as long as pH is normal level? If it does not, what am I doing wrong?

 

[Texas Splash]

Once the TA is at normal levels (60-90) will it remain there,

It should until you add new water due to evaporation, or if you add something like baking soda to make it increase.

 

[daisylubob]

Today. PH 7.4 TA 75 FC 4 CYA 55. FC Is low, otherwise is this pretty good?

 

[PoolStored]

Always round your CYA up to the next 10. Your CYA is 60.

FC is low. Always follow this...link-->FC/CYA Levels

What test kit are you using? TA of 75 doesn't make sense unless you are using a 10mL sample, then it makes sense...

 

[daisylubob]

Taylor K-2006C kit. Yes using 10mL sample. FC should be 7-9 with CYA 60.

 

[PoolStored]

WHEN YOU TEST, your FC should be in range. If you have to dose higher, so you are in range when you test, then dose higher. Always in range when you test.

 

[daisylubob]

Huh???

 

[PoolStored]

Huh???

You want to be in your target range when you test. If you are below range when you test, then dose above range, so that you are in range when you test.

 

[daisylubob]

Ok…….
I just put the test numbers into Pool Math, set the target number, and add chemicals as it tells me to.