Super high ta and normal ph

Dmmcmurry

New member
May 12, 2018
3
Cincinnati Ohio
So we have been fighting a bit of algae and a pump problem that was finally repaired yesterday. Oir 18,000 gallon pool isn’t totally green but the floor of the pool dusts up green. The chlorine is at 5 or more and doesn’t change after waiting and we kept it high while pump broken to fight more algae and it seemed to work. My issue is that the TA is 230 and the PH is at 7.5. The PH has been stable for days despite the high TA. think I need to lower the TA with diluted muriatic acid but how much? Can I use my dolphin to aerate after to raise the PH? Timing on everything appreciated. Newbie to avoiding pool store bc I think their advice is what caused the TA spike. Have five part test. Ordering the more expansive one! TIA.
 

Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
22,069
San Dimas, CA (LA County)
Don't worry about TA if the pH is holding steady.

When pH rises and you adjust it down, then the TA will come down a little. Each time you do it, the pH will recover but the TA will stay down. Just be patient. You don't need to make any special effort.

What you do need to worry about is algae. If you've got it, get on it fast before it gets any worse.
 

YippeeSkippy

Mod Squad
LifeTime Supporter
Jan 17, 2012
12,432
Evans, Georgia
Until your test kit arrives (I prefer the TF-100 kit) I would suggest using a gallon of plain, unscented, non-Clorax brand household bleach in the water daily and brush. Then when you get your test kit you'll have a better idea of what is going on in your water and get that algae out of there.
Have you read any of the pool school articles yet?? -->ABCs of Pool Water Chemistry
SLAM Process
FC/CYA Chart
PoolMath

Maddie :flower:
 

Dmmcmurry

New member
May 12, 2018
3
Cincinnati Ohio
Yes I have been reading. I am all in here. So tired of the bad advice elsewhere. I can brush and add shock again tonight. I think if I sweep to waste and brush then chlorinate tonight we can beat the little bit of algae. If we do can we swim if the TA stays that high?
 

Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
22,069
San Dimas, CA (LA County)
Yes I have been reading. I am all in here. So tired of the bad advice elsewhere. I can brush and add shock again tonight. I think if I sweep to waste and brush then chlorinate tonight we can beat the little bit of algae. If we do can we swim if the TA stays that high?
TA is primarily baking soda. People brush their teeth with it. It's in Toll House Cookies. TA is not a reason to stay out of the pool.

Time to reread ABCs of Pool Water Chemistry
 

Dmmcmurry

New member
May 12, 2018
3
Cincinnati Ohio
Excellent. It looked great this morning and chlorine still as dark or darker than 5.0 on my tester but when I went to brush both time today just the tiniest hint of green so I took your advice and added liquid shock again. We also have a chlorinator operating with tablets. Ph is rising slowly and I would say it’s around 7.7. Alkalinity is at 22 drops or 220 ppm. Should I add acid tomorrow or wait for ph to go higher?
 

Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
22,069
San Dimas, CA (LA County)
Excellent. It looked great this morning and chlorine still as dark or darker than 5.0 on my tester but when I went to brush both time today just the tiniest hint of green so I took your advice and added liquid shock again. We also have a chlorinator operating with tablets. Ph is rising slowly and I would say it’s around 7.7. Alkalinity is at 22 drops or 220 ppm. Should I add acid tomorrow or wait for ph to go higher?
Sounds like tomorrow it will be up to 7.8, so you can go ahead and drop it.
 

JamesW

TFP Expert
Mar 2, 2011
17,325
Do you know what the calcium hardness and cyanuric acid levels are?

Have you been using tabs?

What was the last TA reading before it "spiked"?