Really hot weather

[daisylubob]

With the unseasonably very hot weather in MI the past week or so and more coming up , I am finding it difficult to keep the numbers at a consistent level. Especially the pH it tends to go high 7.6-7.8. I get it down to 7.4 and it goes back up within a few days. FC tends to go down 3-5. I am testing daily or every other (tend to forget ).
Is this common/typical for for hot hot weather?

 

[PoolStored]

Yes. 3-5 daily loss is typical. pH rise is due to low pH and high TA. Stop forcing pH down to 7.4. 7.8-8 is ok. What is your TA.

 

[Texas Splash]

Bob, what is your current CYA? There's nothing in your Poolmath logs for us to see. You might need a bit more CYA to protect the FC from the sun. In some cases, it's good to run an Overnight Chlorine Loss Test before adding stabilizer just to be sure you don't have an organics problem.

 

[daisylubob]

TA is 260, up from 112 last week. Due to rain and 5” of new water???
Also FC today is 5.

 

[PoolStored]

TA is 260, up from 112 last week. Due to rain and 5” of new water???

Something is not right. Rainwater has zero TA.

How are you testing?

 

[daisylubob]

Taylor K-2006C kit. Clear to green to red.
I also added 5” city water, not sure how alkaline that water is. I did that as pool was 94’

 

[PoolStored]

How did you get 112?

 

[daisylubob]

Followed the instructions on the sheet for it. Maybe that was wrong? Other TAs have been 100, 102, 112.
I just tested TA again, still 260.

So now i have to lower pH to 7.0-7.2 with baking soda to get TA down???

 

[PoolStored]

TA is multiples of 10...no way you should get 102 or 112.

Total Alkalinity

A drop-based test used to measure the alkalinity in water. Alkalinity helps serve as a … Read more…

www.troublefreepool.com

 

[daisylubob]

Ok, so no idea how i got those, except maybe the 100?
What is next step?

 

[PoolStored]

pH rises because of high TA and low pH. With a TA of 260, it will rise fairly quickly.

Here is how to lower TA.

Lower Total Alkalinity

A lower Total Alkalinity level can help a pool owner stabalize their pH increase. We'll explain how to lower TA with a little help from muriatic acid.

www.troublefreepool.com

 

[daisylubob]

Ja. What a pain

 

[PoolStored]

What is the TA of your fill water. Test it.

 

[daisylubob]

Good idea. 275. Actually pool is 300, I multiplied wrong
Great help you were! Thank you so much

 

[PoolStored]

You are going to battle rising pH with high TA fill. I built one of these on top of a sump pump and can lower TA 10 in 12 hours in 30Kpool.

Aerator.jpg

• PoolStored
• Sep 11, 2022
• 2

 

[daisylubob]

I have a sump running on the top step of the pool ladder. Seems to be bubbling quite nicely. Doubt I can build something as elaborate as your nice set-up

Is it safe to swim during the TA lowering process?
When I fill next season, should lowering the TA be the 1st thing I do to the water?

 

[PoolStored]

Yes!

No, chlorine is always king. After that, yes pH and Ta and cya.

 

[PoolStored]

The only issue with high TA is rising pH.

 

[daisylubob]

Cool thank you.

 

[daisylubob]

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.