pH in colder water

Pperc

Gold Supporter
May 17, 2019
403
Philadelphia
Pool Size
28000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
Quick question:

this year I’ve left my pool open longer than normal. Not to swim but just haven’t closed yet. The water temp is down to 55.
During the pool season my pH drifts up pretty quickly and I constantly have to bring down with acid. It’s not surprising as my SWG is at 40% and I have a spillover from my spa.
The last month or so though my pH has been pretty steady and I haven’t had to add much acid. The last 2 weeks it’s held at 7.7 without me doing anything. One factor is the SWG is at 10% now with the low temps and no one swimming. Can this explain why pH has held steady? Or is the temp of the water? Or is the colorimetric test effected by the water temp? Just curious what it might be.
 
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Quick question:

this year I’ve left my pool open longer than normal. Not to swim but just haven’t closed yet. The water temp is down to 55.
During the pool season my pH drifts up pretty quickly and I constantly have to bring down with acid. It’s not surprising as my SWG is at 40% and I have a spillover from my spa.
The last month or so though my pH has been pretty steady and I haven’t had to add much acid. The last 2 weeks it’s held at 7.7 without me doing anything. One factor is the SWG is at 10% now with the low temps and no one swimming. Can this explain why pH has held steady? Or is the temp of the water? Or is the colorimetric test effected by the water temp? Just curious what it might be.

I’m noticing the same thing so kinda curious if it’s normal. Feels weird complaining about NOT having to add chemicals.0
 
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Reactions: Pperc and markayash
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