Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 12 of 12

Thread: PH Management with cool water?

  1. Back To Top    #1

    Join Date
    Sep 2013
    Location
    Lincoln, Ca.
    Posts
    23

    PH Management with cool water?

    So I don't know if this is a stupid question or not but I'm going to throw it out there because it will help me better manage my pool. I manage my chemical throughout the winter months and the water dips to 50 degrees worst case as I have read here and on pool calculator my CSI is best at higher PH (8.0). My CH is 400 not crazy out of suggested range but if I lower my PH to suggested 7.6 in cool water the CSI is close to out of range so I prefer to hold a high PH throughout the winter. My issue is the Taylor PH test kit only goes up to 8.0, could I run a higher PH like 8.2 or 8.4? Does the water balance at 8.0 if thats the case I wouldn't need to lower my PH with acid in the winter? Like I said it may be a stupid question but things get cloudy for me when concerned about CSI during cold water months. Thank you in advance for any clarification!
    12,500 Gallon PebbleFina Pool, Jandy CV#460 Filter, Jandy 1.5HP Variable Speed Pump, Jandy PLC1400,Aqualink RS, Clear O3 Ozone, Jandy Pro Series Color LED, 300 Sq.Ft. Heliocoil Solar.

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: PH Management with cool water?

    When the water is at or below 50 degrees you want the PH to be roughly 0.3 higher than your would otherwise keep it. However, you also want the PH below 8.2 or there is no way to measure what it actually is. Normally that should work out, since a typical PH is 7.8, and 0.3 higher is 8.1, which is lower than 8.2.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

    Join Date
    Sep 2013
    Location
    Lincoln, Ca.
    Posts
    23

    Re: PH Management with cool water?

    Is there a way to test above 8.0, my Taylor test kit only reads to 8.0.
    12,500 Gallon PebbleFina Pool, Jandy CV#460 Filter, Jandy 1.5HP Variable Speed Pump, Jandy PLC1400,Aqualink RS, Clear O3 Ozone, Jandy Pro Series Color LED, 300 Sq.Ft. Heliocoil Solar.

  4. Back To Top    #4
    Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
    Posts
    15,001

    Re: PH Management with cool water?

    Not with common pool test kits because it's higher than you want to be. Just shoot for pH under 7.8 and make easy. It's not going to damage your pool. Not even close to it.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

  5. Back To Top    #5
    aussieta's Avatar
    Join Date
    Jan 2014
    Location
    Langwarrin, Victoria, Australia
    Posts
    418

    Re: PH Management with cool water?

    i stop testing ph during winter and then have to make a few adjustments when the water warms up again
    my ch is only 260 (and thats adding a lot of ch to my tap water)
    so to keep csi in range i run 7.8-7.9 ph in summer and let it go high in winter
    SWG inground peanut shaped eco-bright concrete pool
    50,000 litres 13,000 gallons
    Lincoln Salt Chlorinator, 25 gram cell Sand Filter with glass media
    Taylor K2006-C test kit, Taylor K-1766 salt test, Dolphin M500 pool cleaner
    are you taking care of your pool or is the poolshop taking care of you

  6. Back To Top    #6
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: PH Management with cool water?

    Quote Originally Posted by arin View Post
    Is there a way to test above 8.0, my Taylor test kit only reads to 8.0.
    You have to learn the colors, which you can experiment with using the base demand test. The color for 8.2 is different from the color for 8.0, you just don't have a color reference for it.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  7. Back To Top    #7

    Join Date
    Aug 2008
    Location
    Glen Ellen, California
    Posts
    13

    Re: PH Management with cool water?

    Or similarly, I assume it would be possible to come up with a table that, based on the number of acid demand drops it takes to bring the pH down to 7.8, you would know the original pH. Has anyone figured that out?
    15K gal IG gunite, IntelliPro VS3050 variable-speed pump, Jandy CV580 (580 sq ft) cartridge filter
    IntelliChlor IC40 SWG, SunTouch solar-only control system
    Polaris PB4 booster pump, Polaris 280 pool cleaner
    1 skimmer, 3 eyeballs, 256 sq ft solar panels
    Taylor K-2006 test kit, Filled for first time August 8, 2008

  8. Back To Top    #8
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: PH Management with cool water?

    Malcolm, If you know the TA and Borate levels you could in principal do a rough approximation that way, but there wouldn't be much precision.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  9. Back To Top    #9

    Join Date
    Aug 2008
    Location
    Glen Ellen, California
    Posts
    13

    Re: PH Management with cool water?

    Ah, yes, I forgot about those buffers. I do know those levels, so I might play around with that. In the winter, I'm happy with pH sitting near 8.0, but I don't want it to go significantly above that.
    15K gal IG gunite, IntelliPro VS3050 variable-speed pump, Jandy CV580 (580 sq ft) cartridge filter
    IntelliChlor IC40 SWG, SunTouch solar-only control system
    Polaris PB4 booster pump, Polaris 280 pool cleaner
    1 skimmer, 3 eyeballs, 256 sq ft solar panels
    Taylor K-2006 test kit, Filled for first time August 8, 2008

  10. Back To Top    #10

    Join Date
    Sep 2013
    Location
    Lincoln, Ca.
    Posts
    23

    Re: PH Management with cool water?

    I would like to learn the color for 8.2, can you explain base demand test more please?
    12,500 Gallon PebbleFina Pool, Jandy CV#460 Filter, Jandy 1.5HP Variable Speed Pump, Jandy PLC1400,Aqualink RS, Clear O3 Ozone, Jandy Pro Series Color LED, 300 Sq.Ft. Heliocoil Solar.

  11. Back To Top    #11
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: PH Management with cool water?

    The base demand test is designed to let you figure out how much chemical you need to raise the PH by your goal amount. It works by adding drops of a chemical to the PH test vial and counting drops. We don't care about the counting drops portion here. Instead you simply use the base demand reagent to change the PH of the sample while doing the PH test and watch how the color changes. Each drop of base demand reagent will raise the PH a bit (we don't know exactly how much as that varies with TA and other things). Since the PH test maxes out at a PH of 8.2, the final color, where an additional drop of base demand reagent doesn't change the color any further, is the PH of 8.2 color.

    You might also want to read the Taylor instructions for the base demand test. It covers some details I don't mention here.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  12. Back To Top    #12

    Join Date
    Sep 2013
    Location
    Lincoln, Ca.
    Posts
    23

    Re: PH Management with cool water?

    Thank You for pointing me in the right direction once again!
    12,500 Gallon PebbleFina Pool, Jandy CV#460 Filter, Jandy 1.5HP Variable Speed Pump, Jandy PLC1400,Aqualink RS, Clear O3 Ozone, Jandy Pro Series Color LED, 300 Sq.Ft. Heliocoil Solar.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •