Lowering TA

[jessab]

Hi all,

I did a quick search on this but felt a bit conflicted about what I read, so just want to be sure. I want to lower my TA a tad which I will do by first lowering my pH and then pointing my return up to aerate. Someone said thay TA will not decrease as pH is rising. So my question is, should I let the pool sit with the lower pH for a period of time before pointing the jet up?

Thanks for any help you can offer!

Jess

 

[ajw22]

No, you can begin aeration to raise your pH as soon as you add the acid.

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

Aeration - Further Reading

www.troublefreepool.com

 

[jessab]

No, you can begin aeration to raise your pH as soon as you add the acid.

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

Aeration - Further Reading

www.troublefreepool.com

Thank you

 

[AUSpool]

Hi all,

I did a quick search on this but felt a bit conflicted about what I read, so just want to be sure. I want to lower my TA a tad which I will do by first lowering my pH and then pointing my return up to aerate. Someone said thay TA will not decrease as pH is rising. So my question is, should I let the pool sit with the lower pH for a period of time before pointing the jet up?

Thanks for any help you can offer!

Jess

Hi Jess,
That is true, the TA will not decrease as a function of a rising pH. Any decrease in TA is directly proportional to the amount of acid used to decrease the pH. If you have used acid to lower your TA then as long as your not using trichlor or dichlor you pH will naturally rise without intervention. Adding aeration and/or adjusting your returns up will just encourage the pH to rise a little faster. However with winter coming it will help balance you CSI if you let your TA ride a little higher over winter and reduce it in spring instead. Winter snow and rain will also reduce your TA.

 

[Whynotme]

Not sure why, but my pool seems to always level off at 7.8 pH, no matter what I do to TA. My pH was 7.8 and TA was 110 so I lowered the TA to 90 and the pH went down to 7.4, then within two days it was back to 7.8 and has stayed there for weeks.

 

[Katodude]

Well then, I would be extremely happy if I were you. 7.8 is perfect. Dont chase numbers, it a pool.

 

[AUSpool]

I had a perfect 7.8 for a while but realized my new comparator was a dud.

 

[jessab]

Hi Jess,
That is true, the TA will not decrease as a function of a rising pH. Any decrease in TA is directly proportional to the amount of acid used to decrease the pH. If you have used acid to lower your TA then as long as your not using trichlor or dichlor you pH will naturally rise without intervention. Adding aeration and/or adjusting your returns up will just encourage the pH to rise a little faster. However with winter coming it will help balance you CSI if you let your TA ride a little higher over winter and reduce it in spring instead. Winter snow and rain will also reduce your TA.

Thanks for your input!