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Thread: Managing pH...is that just the way it is for me? And other less important questions.

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    Join Date
    Apr 2014
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    Managing pH...is that just the way it is for me? And other less important questions.

    I've been a pool owner for about a year, and thanks to this website I've never really had a water problem. It's always looked good. Now that I'm fairly comfortable with it, I'm trying to dial it in a little tighter. One thing I've never been able to conquer is pH bounce - I was adding acid 2-3 times a week, with a little bit of work I've gotten it down to about every four days. What I'm wondering is if this is just what I'm stuck with, or if there is anything else I can do to help stabilize it a bit more.

    My pool:
    19K gallon play pool, Hayward Super II pump 2.0hp 1.2 SF
    In-floor returns (21 in pool, 6 in hot tub), no in wall return aside from a piddly aerator
    T-15 SWG, only a year old
    Hayward 6020 DE filter
    I run the pump 6 hrs a day (7am-1pm) with the SWG set at 35%

    My numbers:
    pH - maintained between 7.5 and 7.8, moves a tenth a day
    FC - 6.0
    CC - 0
    TC - 6.0
    TA - 80
    CYA - 70
    CH - 575
    Borates - somewhere between 30-50, I really struggle to read the strips

    CSI is -0.05 with a pH of 7.5 and 0.29 with a pH of 7.9, but I try to hit it with acid before getting that high.

    Everything remains relatively steady, I rarely have to adjust anything but pH. Borates are a new addition from about a month ago; I believe it to be responsible for the minor reprieve on days between acid, though it doesn't change how much I need to add over time.

    Chlorine remains pretty constant. I have considered dialing the chlorine back a bit but have left it alone as it just started to get really warm in Phoenix.

    I haven't been willing to let my pH above 7.8 for any longer than a day to see if it stops rising.

    So....is this just what I should expect as far as keeping my pH balanced? It's not a huge nuisance, but with everything else so stable I'm getting greedy. Is there anything else I can do to help stabilize my pH?

    ____________________________________________________________ _____________

    A few other less important questions.........

    Is six hours sufficient run time if the pool continues to stay clean and maintain a good chlorine level? It's freaking hot here (110+) and will be for the next three months.

    If my FC number remains at 6, should I reduce my SWG % to try and get it down closer to 4?

    At what point should I consider fixing my high CH number? The water here is just hard, so it it's going to be a recurring problem.

    Does having a bunch of pop-up heads rotate the water faster than one or two wall returns? (just curious)

    And finally....how I am supposed to get the dirt off of the floor with my vacuum when those pop-up heads are throwing it all over the place? I do think the pop-up heads help it stay cleaner, longer, but it does make it difficult to get it spotless.
    19K PebbleTec in-ground with spa, Hayward Super II pump, DE 60 series filter, T-15 SWG
    Water feature, Hayward Northstar pump

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    Mod Squad pooldv's Avatar
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    DFW, TX
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    Re: Managing pH...is that just the way it is for me? And other less important questi

    6 hrs is fine, FC of 6 is fine, I like 8. Don't know much about CH, but there are people here with 800+. The pop up heads sounds like an in-floor cleaning system. That should keep the bottom clean. I don't know much about them, maybe taking some time to tweak it can keep it clean.

    You can lower PH to 7.2 and allow it to rise to 7.8, that will add some time in between. Also, you can lower TA as low as 50. Maybe drop it to 70 for a while and see what happens, then 60 and then 50 until the PH stabilizes. Pool School - Lower Total Alkalinity
    TFP Moderator
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Re: Managing pH...is that just the way it is for me? And other less important questi

    I have the same problem with PH. I might try this too.


    26,000 IG, pebble tec, flagstone, pentair Triton II TR100 sand filter & VS+SVRS 3hp multi-speed pump, Intellichlor IC-40 SWG, Pentair Booster Cleaner, spillover spa, waterfall, Taylor K-2006 testkit
    [It is better to know how to learn, than to know. - Dr. Seuss[/I]

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    Join Date
    Sep 2013
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    Charleston, SC
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    Re: Managing pH...is that just the way it is for me? And other less important questi

    Two things I see that will be an issue for your PH and they are:

    1. the water feature as aeration increases PH and
    2. lowering your TA to as low as 50 (incrementally lowered until you see stability) will help as well.

    Good luck.
    5900 G Fiberglass IG pool (circa 1990), SWG Hayward Aqua Rite GoldLine (2013), IntelliFlo Variable Speed Pump (2013), Hayward Pro Sand Filter (circa 1990), Well water (no iron or other metals fortunately), test with Taylor K2006C, Charleston, SC

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    jccams's Avatar
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    May 2010
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    Dexter, MI
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    Re: Managing pH...is that just the way it is for me? And other less important questi

    I too use to fight the constant PH rise. This year when I opened my TA was 60, lower than years past. I didn't adjust TA and to my surprise PH started at 7.6 and hasn't moved in 6 weeks. I'm leaving TA alone.
    24,000 gal vinyl Lazy L, 1 hp pump, DE Filter, Pentair 250K heater, Letro Legend pressure side pool sweep

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    Join Date
    Apr 2014
    Location
    Phoenix, AZ
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    Re: Managing pH...is that just the way it is for me? And other less important questi

    Thanks for all of the replies. Despite the SWG, my alkalinity number rarely moves. I don't run the water feature very often or very long but I do have a contraption I put together to super aerate. Moving my TA was tough before I added borates - this could take months!
    19K PebbleTec in-ground with spa, Hayward Super II pump, DE 60 series filter, T-15 SWG
    Water feature, Hayward Northstar pump

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    Re: Managing pH...is that just the way it is for me? And other less important questi

    No expert here, but here is my exp. I had same issue last summer but after the winter with snow melt n rain, my TA was less n now ph hardly moves. With the SWG I rarely do anything to pool this year. Test to check, n brush n skim occasionally other then that, I don't do jack. It all is working itself perfect. If anything, I have reduced run time even less. Pool is perfect. The experts here, even if a bit "harsh" at times, no exactly what they are saying is right.
    Using Tapatalk

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    Re: Managing pH...is that just the way it is for me? And other less important questi

    kchacker - I have hard water and my CH is currently 450. My fill water is 100 and I'm also in the desert and have to top off the pool twice a week due to evaporation. I am looking into a water softener just for my pool fill but I'm not convinced about it yet. It does seem if you keep your CSI in the proper range that you can go with high CH for a long time before draining and refilling the pool.
    17,000 gallon inground pool; Plaster redone January 2015; Pentair Cartridge Filter; SWG; Age of pool unknown (house built in 1973); Taylor K-2006 Test Kit.; Doheny Discovery robot cleaner.

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