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Thread: Forgot to balance PH before SLAMMING, what should I do?

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    Forgot to balance PH before SLAMMING, what should I do?

    All,
    I opened my pool and it was dark green and filled with Algea. So, I just installed a new Hayward Sand Filter and new sand and started slamming and forgot to adjust the PH before doing so.
    I Started on 05/14/2014. At dusk I poured in 4 gallons of 12% bleach. I tested FC the next night and was at 13.5 and my CC was at 1. Based on my CYA, I need to keep shock at 15. So, I poured in the recommend level of bleach. I've been trying to maintain that level at 15. I tested last night and was good. This morning when I woke up it was at 12.5. So, I poured in 52oz of bleach as recommended by the pool calculator. The pool looks better everyday, but now I notice it's getting cloudy. Is that a good sign or bad? I know PH readings are off if FC is over 10, so I guess I will have to wait before messing with that, correct? Any advice?
    20,000 gallon
    IG Vinyl Foxx
    Hayward S244T Pro Series Top-Mount 24-Inch Sand Filter with 1-1/2-Inch Vari-Flo Valve
    Pump ?
    Age of pool = 15 years old

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    Re: Forgot to balance PH before SLAMMING, what should I do?

    I would test the pH when FC is at it's lowest....usually in the AM or PM. If pH is 7.4 up to 8.0, that will be close enough. If it is higher or lower, post back.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad JVTrain's Avatar
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    Re: Forgot to balance PH before SLAMMING, what should I do?

    If it were my pool, I'd let the FC drop to about 6-8 or so then check pH, adjust, then back to SLAMing. I don't think you'd lose any ground on the SLAM process, just delay it by a few hours. If your pH was high and you lower it to proper levels, your chlorine is more effective (from what I recall in reading/Pool School).
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    Re: Forgot to balance PH before SLAMMING, what should I do?

    The lowest my FC has gotten over the past two days is 12.5. So, would that be low enough to test? Should I worry about TA?
    Thanks for the quick replies and advice. I really appreciate it! I love the new Taylor test kit.
    20,000 gallon
    IG Vinyl Foxx
    Hayward S244T Pro Series Top-Mount 24-Inch Sand Filter with 1-1/2-Inch Vari-Flo Valve
    Pump ?
    Age of pool = 15 years old

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    Mod Squad JVTrain's Avatar
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    Re: Forgot to balance PH before SLAMMING, what should I do?

    No worries on TA until after you've finished SLAM. Then you can play with that when you get bored.

    Since you're not losing much FC daily, you're really not going to set yourself back by allowing the FC to drop to below 10 so you can test pH. I'd still do that and then resume SLAM.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    Smykowski's Avatar
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    Re: Forgot to balance PH before SLAMMING, what should I do?

    ^^ I agree with this post.^^
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    Re: Forgot to balance PH before SLAMMING, what should I do?

    Thank you guys, much appreciated!
    20,000 gallon
    IG Vinyl Foxx
    Hayward S244T Pro Series Top-Mount 24-Inch Sand Filter with 1-1/2-Inch Vari-Flo Valve
    Pump ?
    Age of pool = 15 years old

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    Casey's Avatar
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    Re: Forgot to balance PH before SLAMMING, what should I do?

    Make sure FC is under 10ppm to check pH.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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    Re: Forgot to balance PH before SLAMMING, what should I do?

    Quote Originally Posted by duraleigh View Post
    I would test the pH when FC is at it's lowest....usually in the AM or PM. If pH is 7.4 up to 8.0, that will be close enough. If it is higher or lower, post back.
    My FC level was at 10 last night when I got home from work. So, I tested PH and it was 7.6.
    20,000 gallon
    IG Vinyl Foxx
    Hayward S244T Pro Series Top-Mount 24-Inch Sand Filter with 1-1/2-Inch Vari-Flo Valve
    Pump ?
    Age of pool = 15 years old

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    Re: Forgot to balance PH before SLAMMING, what should I do?

    Just updating everyone!
    Everyday the pool looks better and better. Last night was the first night I didn't lose any FC, water clarity is improving. I can see the bottom all around pool except for the deep end.
    PH testing with FC at 15 is 7.6. So, I'm going to let the FC drop below 10 and test PH later tonight. It's still cold outside here in Ohio, so water temp is very cold. Thank you everyone for all your help.
    The nice Taylor testing kit has made things much easier.
    20,000 gallon
    IG Vinyl Foxx
    Hayward S244T Pro Series Top-Mount 24-Inch Sand Filter with 1-1/2-Inch Vari-Flo Valve
    Pump ?
    Age of pool = 15 years old

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    Re: Forgot to balance PH before SLAMMING, what should I do?

    You would clear your pool faster if you kept your chlorine up at SLAM value and simply ignore your pH until the SLAM is complete. Either way is Okay but your pH does not need to be retested.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Forgot to balance PH before SLAMMING, what should I do?

    Just checking in. I can now see the main drain and pool is getting clearer everyday. The pool does still have a green tint to it, but water clarity is really improving. FC loss overnight is minimal to none.
    I'm trying to be very patient. Thanks for all your help. Still maintaining my shock level at FC 15. Won't stop until I pass all three of the SLAM tests.
    20,000 gallon
    IG Vinyl Foxx
    Hayward S244T Pro Series Top-Mount 24-Inch Sand Filter with 1-1/2-Inch Vari-Flo Valve
    Pump ?
    Age of pool = 15 years old

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    Re: Forgot to balance PH before SLAMMING, what should I do?

    Good work, WDM. Patience is tough to have right now but stay the course. Thousands have been successful before you and thousands will follow.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Forgot to balance PH before SLAMMING, what should I do?

    Thank you everyone, my pool is crystal clear. You can see the main drain from all the way across the other side of my yard. It took about 10 days to get super clear!! You guys and all your support are awesome!
    20,000 gallon
    IG Vinyl Foxx
    Hayward S244T Pro Series Top-Mount 24-Inch Sand Filter with 1-1/2-Inch Vari-Flo Valve
    Pump ?
    Age of pool = 15 years old

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    Mod Squad JVTrain's Avatar
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    Re: Forgot to balance PH before SLAMMING, what should I do?

    Quote Originally Posted by whodaman View Post
    Thank you everyone, my pool is crystal clear. You can see the main drain from all the way across the other side of my yard. It took about 10 days to get super clear!! You guys and all your support are awesome!
    Yahoooo! You did it.

    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    Beens's Avatar
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    Re: Forgot to balance PH before SLAMMING, what should I do?

    Congratulations!

    Pics?
    18' x 48" (42" water depth) Intex Metal Frame 6,700 Gallons
    Hayward Power-Flo LX 1.0 HP pump
    Hayward Pro Series S166T Sand Filter
    Original Intex Floating Skimmer

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