pH is out of control

[lindz18]

I CAN NOT keep my pH under control this year. Never had this problem in 5 seasons. I can bring my pH down one day and it is back to 8+ the next day. I don't have any major aeration of the water other than some ripples in the shallow end from that return jet. Can anyone help?

TA is 70
FC stays under 10 at all times

Today's:
FC 6
CC 0
CYA 30
pH 8+
TA 70
CH 0

 

[ajw22]

What is the pH and TA of your fill water?

You have an autofill on the pool?

 

[lindz18]

What is the pH and TA of your fill water?

You have an autofill on the pool?

No, autofill. And haven't had to add water in quite a while. Plenty of pop up showers

 

[ajw22]

List all the chemicals you put in the water.

 

[frogabog]

No, autofill. And haven't had to add water in quite a while. Plenty of pop up showers

Are the pop up showers fresh water?

 

[jmikeb]

Are the pop up showers fresh water?

he means rain

 

[frogabog]

he means rain

Haha! I was imagining some kind of pop up shower heads embedded in the deck around the pool.

 

[lindz18]

List all the chemicals you put in the water.

Bleach daily. Lower pH with muriatic acid. Pretty much it lately

 

[lindz18]

Are the pop up showers fresh water?

Yes, but for example Monday pH was high. I lowered it. The very next day it was back up. No rain...

 

[frogabog]

Is there a lot of play happening in the pool? Mechanical aeration, so to speak?

Have you considered borates?

 

[jimbethesda]

Bleach daily. Lower pH with muriatic acid. Pretty much it lately

Have you been using bleach for awhile, or did you use pucks in previous seasons?

 

[duraleigh]

I would suggest chlorinating with pucks. (Yikes!)

I assume you have tried really hard to control with acid and I ASSUME YOU KNOW PUCKS CAN GET YOU IN TROUBLE but with a CYA of 30 in Tennessee and maybe a month or so of swim season left, I doubt your CYA would increase much over 50 and I am almost certain your pH would stay in the 7's

 

[jtpipkin]

Try borates - they've done wonders for the stability of my pH this year. Can't really hurt, but may help

 

[lindz18]

Is there a lot of play happening in the pool? Mechanical aeration, so to speak?

Have you considered borates?

Swim about 3 times a week. Minor aeration at surface at shallow end from jet

 

[lindz18]

Have you been using bleach for awhile, or did you use pucks in previous seasons?

No pucks-always bleach

 

[lindz18]

I would suggest chlorinating with pucks. (Yikes!)

I assume you have tried really hard to control with acid and I ASSUME YOU KNOW PUCKS CAN GET YOU IN TROUBLE but with a CYA of 30 in Tennessee and maybe a month or so of swim season left, I doubt your CYA would increase much over 50 and I am almost certain your pH would stay in the 7's

Good idea... needing to raise my CYA and that would definitely be a cheaper idea than more granulated stabilizer.