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Thread: Ph Preference

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    wjr75's Avatar
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    Ph Preference

    My pool seems crisper/clearer at 7.2ph verses 7.5. What do you guys and gals try to keep your ph at? Of course it always is going up on me
    Inground 22k gallon gunite 15x31 main pool, 15x7 wading pool/sunning deck, hot tub/with overflow (9' octagon with limestone top) & slide NSWG, Aqua Blue Pebble Sheen
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    ranger_ric's Avatar
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    Re: Ph Preference

    I have a TA of 110 so I try to keep my pH between 7.2-7.5, It is slowly bringing my TA down as it was 140.
    I have also had that feeling that the water looks crisper somehow with a lower pH. I cant put my finger on it and I know I have to add MA every other day or so. but the mornings after the MA treatments the water does "appear" to look different.
    17500 Gal Above Ground, 1.5HP Dynamo Pump, 250# Pentair Sand filter with ZeoLite. Diver Dave Cleaner. TFP test kit w/SpeedStir, 7 Grandaughters and 1 Grandson swimming every week WooooHooo!!

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    Re: Ph Preference

    My PH likes to stay around 7.2. If I add a bit of Borax, I get my sparkle back. Doesn't take much.
    26' X 52" Intex Ultra Frame. Intex Sand Filter
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    Re: Ph Preference

    I'm at about 80ppm TA so to keep adding the acid to get the 7.2ph I'm going to start to have to increase the TA with baking soda once it gets below 70ppm. Not a big deal to keep the crsip edge I guess.
    Inground 22k gallon gunite 15x31 main pool, 15x7 wading pool/sunning deck, hot tub/with overflow (9' octagon with limestone top) & slide NSWG, Aqua Blue Pebble Sheen
    Filter dual cartridge Sta-rite 450sq/ft, TF-100 Test Kit
    Heater Raypak 2100 400k btu cupro-nickel exchanger
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    Re: Ph Preference

    I try to keep mine around 7.4 to 7.6. Mostly 7.4. My water doesnt look dull. I look at the photos of borax pools and dont see any difference in mine and theirs. But pictures dont always get the full picture. I do notice the water looks better at different times of the day. I suppose its the way the sun shines on it.
    18,000 Gallon Aboveground. Sand Filter with 2HP 2 speed Pump.

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    JasonLion's Avatar
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    Re: Ph Preference

    PH doesn't normally have any impact on how clear the water is unless it is way out of range. The only exceptions I can think of include very high CH levels or pools without any CYA at all, both of which can be more sensitive to PH than usual.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    wjr75's Avatar
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    Re: Ph Preference

    The last month I did bring the CYA up from 30 to 43 where I'm set at for the rest of the summer. I think the extra CYA actually has an effect on the clarity and sparkle a tad bit also. Just my observations.

    PS: Jason I tried adding that I have a TF-100 test kit to my signature a few times and saved and it will not show up.

    - - - Updated - - -

    With a new Pebble Sheen plaster finish two months ago I went from 130CH to 300CH which I tested today so maybe that's what I'm seeing? It really looks better after I add the acid..I must have good eye balls
    Inground 22k gallon gunite 15x31 main pool, 15x7 wading pool/sunning deck, hot tub/with overflow (9' octagon with limestone top) & slide NSWG, Aqua Blue Pebble Sheen
    Filter dual cartridge Sta-rite 450sq/ft, TF-100 Test Kit
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    Re: Ph Preference

    You might want to try adding the kit on a different line of info. I remember having a similar problem when trying to edit mine. See if it "fits" after the filter info.
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
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    Re: Ph Preference

    Thanks Kiss4afrog! I love this site by the way. See if this worked.
    Inground 22k gallon gunite 15x31 main pool, 15x7 wading pool/sunning deck, hot tub/with overflow (9' octagon with limestone top) & slide NSWG, Aqua Blue Pebble Sheen
    Filter dual cartridge Sta-rite 450sq/ft, TF-100 Test Kit
    Heater Raypak 2100 400k btu cupro-nickel exchanger
    Auto pool cover, Polaris 280 auto pool cleaner, Jandy AqualinkRS8 Remote Control System

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    Re: Ph Preference

    U da MAN

    Getting late, time for a libation and bed
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. ?° too cold
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
    TF-100, Best test kit - TFTestkits.net
    Please help keep the lights on, become a TFP Supporter!

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    Re: Ph Preference

    I noticed after I added boric acid my water seemed to be smooth as glass and has more luster. I keep my PH up around 7.8 as it seems to affect my CSI numbers more than any other chemical. My CSI is -0.16 at the moment with TA hovering around 80 and CYA at 70-CH is 300 and I'm thinking about increasing CH to 325. I now only have to add MA once a week and it's usually only 20 ounces or so to keep it from getting too high. When I do lower it, I only lower it to around 7.6-7.7. My pool has never looked better!
    IG Pebbletec Blue Tahoe; Paddock Pool PCC 2000 pop-up; 22,275 gal 32' x 16' Diving with Auto-Fill
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    Re: Ph Preference

    My PH likes to hang out in the 7.6-7.7 range with a TA of 80. If I lower it to 7.4 or so it just drifts back to the 7.6-7.7 range so I leave it there. Pool looks great and no burning of the eyes so I'm good with it.
    24,000 gal vinyl Lazy L, 1 hp pump, DE Filter, Pentair 250K heater, Letro Legend pressure side pool sweep

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    Re: Ph Preference

    Quote Originally Posted by jccams View Post
    My PH likes to hang out in the 7.6-7.7 range with a TA of 80. If I lower it to 7.4 or so it just drifts back to the 7.6-7.7 range so I leave it there. Pool looks great and no burning of the eyes so I'm good with it.
    Same with my pool, I just leave it be. It drifts up to 8.0 on occasion so I just lightly correct it back down. No complaints from my swimmers!
    33K gal vinyl IG, 1.5 HP SuperFlo pump, Hayward S244T sand filter (62GPM)

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    Re: Ph Preference

    I am also one that agrees with "my pool" being the sparkling best at 7.2, don't know why but the wife also says it looks "shimmering."
    21' x 54" AGP Heritage 12,000 gallons.
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    Re: Ph Preference

    I'm the opposite of most of you. I always try to keep my pH around 7.8, because over time my pH tends to drift down. I never let it get below 7.2.
    John
    7 year old ~13,500 gal 24' AGP with 1.5 hp Proline pump, 150 sqft Pleatco cartridge, filled with well water with pH of about 4.5.
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    Re: Ph Preference

    Quote Originally Posted by JohnN View Post
    I'm the opposite of most of you. I always try to keep my pH around 7.8, because over time my pH tends to drift down. I never let it get below 7.2.
    I assume this is because of your very low pH fill water from your well?

    Thanks for reading... - Tony
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    Re: Ph Preference

    Quote Originally Posted by y_not View Post
    I assume this is because of your very low pH fill water from your well?

    Sent from my PC36100 using Tapatalk 2
    I have 2 theories about my pH. The first is, like you said, the acid well water plus acid rain. The other thing I can think of is that I keep my solar cover on most of the day, except for when I'm swimming for a few hours.
    When I look at my pool spreadsheet, you can see that without fail, my pH always tends to drift down to at least 7.4.
    John
    7 year old ~13,500 gal 24' AGP with 1.5 hp Proline pump, 150 sqft Pleatco cartridge, filled with well water with pH of about 4.5.
    Wanda the Whale pool vacuum, home made heater, Taylor K-2006
    Cloudy Pool? 1) Order test kit. 2) Follow SLAM
    New to TFPC? Read Pool School a few times, then post questions. PoolMath will help with chemical additions.

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    Re: Ph Preference

    John
    7 year old ~13,500 gal 24' AGP with 1.5 hp Proline pump, 150 sqft Pleatco cartridge, filled with well water with pH of about 4.5.

    Wow. Your well must be tapped into the muriatic acid pipeline.
    18,000 Gallon Aboveground. Sand Filter with 2HP 2 speed Pump.

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    Re: Ph Preference

    Quote Originally Posted by easttn View Post
    filled with well water with pH of about 4.5.

    Wow. Your well must be tapped into the muriatic acid pipeline.
    Bahaha, right?? :sly::what: Just about! I think ma is somewhere around 1.5-1.9 pH.

    Sent from my PC36100 using Tapatalk 2

    Quote Originally Posted by JohnN View Post
    I have 2 theories about my pH. The first is, like you said, the acid well water plus acid rain. The other thing I can think of is that I keep my solar cover on most of the day, except for when I'm swimming for a few hours.
    When I look at my pool spreadsheet, you can see that without fail, my pH always tends to drift down to at least 7.4.
    It's definitely your well water. Solar cover isn't going to lower pH, but keep it more stable than anything. Although I'm not sure, aside from outgassing as the main cause, how much UV light plays a role in causing pH to drift upwardly. I know with my opaque cover on, pH just sits there and doesn't go up. Never had an issue with it going down.

    You aren't by chance using pucks are you? Or do you possibly have an autofill from your well water?
    Thanks for reading... - Tony
    Da' Pool: Intex 15'x42" 3284gal AGP EasySet (Inflatable Ring) - (Summer 2014: 27' round EW /w 6.5' deep end @ 22,500gal)
    Pump & Cart Mod: 1000gph Cart. 5ft² - 2 nylons, 24/7 OP. Traps bugs/bits, lasts longer/cleans easier = Happier Pool Owner!!
    The Bible for a "Trouble Free Pool" life = PoolSchool, the BBB method a TF100 test kit(Recommend Kits Compared). - Cleaning a Sand Filter
    Water looks like GLASS, if yours doesn't...SLAM IT! Feels nice and never been happier!!! :D

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    Re: Ph Preference

    No pucks and no autofill. I don't even top up that much. Nonetheless, the records clearly show a downward pH drift. Anyway, I don't want to start hijacking this thread, so back to the original topic again. Yeah, I prefer my pH around 7.8, but I'll accept down to about 7.4.

    Maybe there's some guy that sneaks around dumping muriatic acid into my pool at night.
    John
    7 year old ~13,500 gal 24' AGP with 1.5 hp Proline pump, 150 sqft Pleatco cartridge, filled with well water with pH of about 4.5.
    Wanda the Whale pool vacuum, home made heater, Taylor K-2006
    Cloudy Pool? 1) Order test kit. 2) Follow SLAM
    New to TFPC? Read Pool School a few times, then post questions. PoolMath will help with chemical additions.

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