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Thread: forgot to test ph before starting slam???

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    forgot to test ph before starting slam???

    do i need to let the chlorine level go down and start over? if so what clorine level do i need to let it go down to before I test pH and do all the other tests? thanks!
    Greenville NC
    14,657 gallons IG vinyl pool 14x28
    1HP A.O. Smith Pump Polaris 9550 sport robotic cleaner
    Pentair Tagelus high rate sand filter 04C TA-60/60D

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    Richard320's Avatar
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    Re: forgot to test ph before starting slam???

    If you're well underway with the SLAM, just keep going.

    If at any time you test FC and it's below 10, you can check pH then and get an accurate reading and deal with it then. But don't slow down just to test pH. You can fix it after the water is clear. The other tests will still be valid, but the TA test might shift from green>pink to blue> yellow.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: forgot to test ph before starting slam???

    ok I admit I didn't do any testing after I tested the FC and it was 1 and I saw some algae I started pouring jugs of bleach in....just tested and I stopped at 30 drops (FC 15) and it was still bright red. Are the other tests like CYA valid with FC so high? Do I need to do all the tests now and SLAM or let FC go below 10 and then test everything and start the SLAM? thanks Richard!
    Greenville NC
    14,657 gallons IG vinyl pool 14x28
    1HP A.O. Smith Pump Polaris 9550 sport robotic cleaner
    Pentair Tagelus high rate sand filter 04C TA-60/60D

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    Richard320's Avatar
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    Re: forgot to test ph before starting slam???

    Quote Originally Posted by Matthewmon View Post
    ok I admit I didn't do any testing after I tested the FC and it was 1 and I saw some algae I started pouring jugs of bleach in....just tested and I stopped at 30 drops (FC 15) and it was still bright red. Are the other tests like CYA valid with FC so high? Do I need to do all the tests now and SLAM or let FC go below 10 and then test everything and start the SLAM? thanks Richard!
    The other tests will still be valid, but the TA test might shift from green>pink to blue> yellow.

    I would at least check the CH and CYA. If either are really high, you'll probably want to replace some water, so there's no point in continuing to add bleach to water you're just going to dump anyway. You also need to know your CYA level so you can establish shock level or you're not really doing a SLAM, you're just blindly wasting bleach. The pH test will read artificially high at 10+ FC and you're well above that.

    Again: If at any time you test FC and it's below 10, you can check pH then and get an accurate reading and deal with it then. But don't slow down just to test pH. You can fix it after the water is clear.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: forgot to test ph before starting slam???

    check CH even though I have a vinyl liner??? that is the only thing I have never tested for in the 3 years I have had the pool.

    also how often should I run my pool robot?

    thanks!
    Greenville NC
    14,657 gallons IG vinyl pool 14x28
    1HP A.O. Smith Pump Polaris 9550 sport robotic cleaner
    Pentair Tagelus high rate sand filter 04C TA-60/60D

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    Richard320's Avatar
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    Re: forgot to test ph before starting slam???

    Quote Originally Posted by Matthewmon View Post
    check CH even though I have a vinyl liner??? that is the only thing I have never tested for in the 3 years I have had the pool. thanks!
    Low CH is not a problem for a vinyl liner, but high CH can be. You can still grow scale, but you can't use a wire brush to loosen it.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: forgot to test ph before starting slam???

    when I get home from work I will post the pool test results here by 6pm somebody please check back tonight to give me some guidance thanks a million!!!
    Greenville NC
    14,657 gallons IG vinyl pool 14x28
    1HP A.O. Smith Pump Polaris 9550 sport robotic cleaner
    Pentair Tagelus high rate sand filter 04C TA-60/60D

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    Re: forgot to test ph before starting slam???

    CH no change after 3rd drop equals 30.

    CYA I could still pretty much see that there was a round dot at 20.

    What to do now???? add 2 lbs of stabilizer to get to 40ish? thanks!
    Greenville NC
    14,657 gallons IG vinyl pool 14x28
    1HP A.O. Smith Pump Polaris 9550 sport robotic cleaner
    Pentair Tagelus high rate sand filter 04C TA-60/60D

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    Richard320's Avatar
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    Re: forgot to test ph before starting slam???

    Quote Originally Posted by Matthewmon View Post
    CH no change after 3rd drop equals 30.

    CYA I could still pretty much see that there was a round dot at 20.

    What to do now???? add 2 lbs of stabilizer to get to 40ish? thanks!
    No. Just keep SLAMming. Use 10 as your target. That is shock level for CYA levels less than 30. Don't forget to brush.

    You can raise CYA (And CH if you feel so inclined) later when you fix the rest.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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