Ph - adjustments?

[sas90]

Hello,

Here’s my latest liquid chlorinated pool chemistry-

FC - 6
CH - 225
TA - 80 (previously 100)
ph 7.4 (previously 7.8)
CYA 30
Last night I added 40 oz MA.

My pool typically hovers around ph 7.8, sometimes a little higher whether my TA is 50 or 100 (or in between).
I can reduce ph by adding MA but only temporary because it tends to rise back to 7.8 (sometimes a little higher, even 8.0).

Other than chlorine being a little less effective should I stress about a ph consistent at 7.8 - 8.0?

I understand some pools just like to run a little higher ph?

Thank you,

Stephanie

 

[Mr Bruce]

Other than chlorine being a little less effective should I stress about a ph consistent at 7.8 - 8.0?

That is only true of water with no CYA. With CYA the difference is negligible. Only drop pH when it gets to 8.0. Your TA may go down even more and that will slow the process of the rising pH. Only bump TA back up when it gets below 50.

 

[ajw22]

pH anywhere in the 7s is ok. When it gets to 8 lower it to 7.6-7.8.

 

[mepot101]

This is good to know, my pool seems to be the same, ph likes to ride 7.6-7.8.

 

[sas90]

That is only true of water with no CYA. With CYA the difference is negligible. Only drop pH when it gets to 8.0. Your TA may go down even more and that will slow the process of the rising pH. Only bump TA back up when it gets below 50.

Good to know - thank you Mr Bruce!

 

[sas90]

pH anywhere in the 7s is ok. When it gets to 8 lower it to 7.6-7.8.

Thank you!