High Ph

Slmcveigh72

Well-known member
Jul 18, 2017
68
Placerville, ca
Our pool finished completion at the beginning of last summer. I have been following TFP since before we started construction. We use the TF pool testing kit. Here’s my delima, I can’t get my pH down, it has never been under 8.2.
I test weekly (record my numbers in Pool Math) and every week its 8.2. I add the recommended amount of acid (31.45) and it remains high.
Here are my numbers from today:
FC -8.0
pH- 8.2
TA-110
CH- 250
CYA- 90
Salt-3200

Am I just being too conservative? Should I add more than the recommended amount of acid each week?
Any tips or suggestions would be much appreciate.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
44,320
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Do you have water features? How often and for how long do you run them?

Adding acid twice a week would be better.

What is the TA of your fill water?
 
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HermanTX

Gold Supporter
May 20, 2020
2,640
Katy TX
Pool Size
14600
Surface
Plaster
Chlorine
Liquid Chlorine
I see your TA bounces up and down so your acid appears to be affecting that. Are you running a waterfall or a spa spillover full time? That aeration can cause your pH to climb.
If you do have a water feature as noted above, suggest you turn it off for a couple of days and see if your pH moves down with the MA you mix in. Your goal should be to get TA under 100 and maintain pH under 8.
Once last item, have you verified that your pH reagent is still valid? it may be time for a new bottle.
 
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ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
29,058
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
I can’t get my pH down, it has never been under 8.2.

When do you retest your pH?

Add acid then retest after 45 minutes. Repeat as needed until your pH is around 7.6.

Your pool volume may be off which would throw the recommended amount of chemicals to be added off.
 
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Slmcveigh72

Well-known member
Jul 18, 2017
68
Placerville, ca
Thank you for your responses. We do have a hot tub with a spillover water feature. We run it daily for about 12 hours, it comes on with the pump.
Thank you for mentioning our pool volume, it is off in the app, ugh. It was originally supposed to be a 23k gallon pool but when it was filled it was a 34k gallon pool. I am changing it now...I’m sure it makes a difference in calculations.
I will try retesting every 45 min until I bring it down. You are all AWESOM, thank you!
Do you have water features? How often and for how long do you run them?

Adding acid twice a week would be better.

What is the TA of your fill water?
I never thought to test the fill water. I‘ll do that now.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
44,320
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Do you have an automation system that you control the pump, spa, etc with ?
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
29,058
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
It was originally supposed to be a 23k gallon pool but when it was filled it was a 34k gallon pool. I am changing it now...I’m sure it makes a difference in calculations.

Your signature stills says your pool is 23K.

You can dial in the correct pool volume by testing after adding chlorine or acid and adjusting your pool volume until the PoolMath recommended dose correctly predicts the result.

 
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