is it normal for PH to raise on its own?

[dannieboiz]

It's been too cold to swim here so I haven't been doing my routine chemistry check. Did it last weekend, brought everything to speed, now I notice my PH went from 7.2 to 8.2.

 

[RonsPlc]

What is your TA, and how much rain did you get?
Could you post a whole set of numbers?

 

[dannieboiz]

I added acid and chlorine just moments ago and did not log a full set this morning. I normally do a full set every couple weeks but I remember my TA was 100 last I checked.

I normally test for PH and FC every few days. Should I be doing the full test each time?

I can couple back in a few hours to do a full set

 

[samt]

I don't do a full test ea time. Sometimes I just put in my standard dose of chlorine without doing a FC test. The next day I will do a FC test though. Heck, sometimes I will do a FC test and after I see the shade of red, I will stop there without putting in and counting the drops. I feel I have a good grip on what my pool needs and how to take care of it.

As far as the ph goes, yea I have to adjust it a few times during the season. But not often.

 

[AimeeH]

It's been too cold to swim here so I haven't been doing my routine chemistry check. Did it last weekend, brought everything to speed, now I notice my PH went from 7.2 to 8.2.

Your TA is a buffer for your PH. High TA can cause ph to rise re quickly. That's the reason for the TA question.

 

[RonsPlc]

I normally check my FC CC and PH regularly (daily), if I see anything out of line from what I expect, I do some further testing.
I have found that keeping my TA at between 80-90 works best for keeping my Ph where I want it. ( a trick with my tap water being 150+ TA)
Rain will increase your Ph in a hurry, which is why I asked.

 

[dannieboiz]

Had a little algae so I added a bunch of chlorine....
Result test from yesterday...

FC-11 - dropped to 9 today
PH- 8.2 - 7.2 today after adding acid yesterday
CH-350-400
TA- 100
CYA-50