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Thread: Help with green pool

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    Help with green pool

    I'm trying to clean my green pool. Here are the numbers

    TA 70
    Ph 7.6
    CH 90
    Fc 0
    Stabilizer 50

    Seems like ok numbers. Should I just start pouring bleach in to shock it and clean it up? I have a 30 foot round above ground pool. 52" tall. I believe it's 21000 gallons. Vinyl liner.
    21,000 gal AG 30 foot round pool. Sand Filter. 1.5 hp pump.
    360 gallon 2015 relay hot springs hot tub
    North Dakota

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    Re: Help with green pool

    Quote Originally Posted by dozer11 View Post
    I'm trying to clean my green pool. Here are the numbers

    TA 70
    Ph 7.6
    CH 90
    Fc 0
    Stabilizer 50

    Seems like ok numbers. Should I just start pouring bleach in to shock it and clean it up? I have a 30 foot round above ground pool. 52" tall. I believe it's 21000 gallons. Vinyl liner.
    Here is a pic. And my husband vacuuming.
    Attached Images Attached Images
    21,000 gal AG 30 foot round pool. Sand Filter. 1.5 hp pump.
    360 gallon 2015 relay hot springs hot tub
    North Dakota

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    Re: Help with green pool

    What test kit are you using?
    18ft Round AG, Vinyl, 100LB Pentair Sand Filter, 1HP, June 2012, TF-100 w/SpeedStir

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    Re: Help with green pool

    Taylor. Except the stabilizer was from a test strip.
    21,000 gal AG 30 foot round pool. Sand Filter. 1.5 hp pump.
    360 gallon 2015 relay hot springs hot tub
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    Mod Squad jblizzle's Avatar
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    Re: Help with green pool

    Step away from the test strips, they are garbage.

    Which kit specifically?
    Jason, TFP Moderator
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    Re: Help with green pool

    K-2006. I agree about the strips. What a pain. I was desperate though...
    21,000 gal AG 30 foot round pool. Sand Filter. 1.5 hp pump.
    360 gallon 2015 relay hot springs hot tub
    North Dakota

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    April's Avatar
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    Re: Help with green pool

    I have the TF-100. So I'm not familiar with that specific test.

    Can you test CYA with it? ( instead of the strips)

    - - - Updated - - -

    Your SLAM LEVEL depends on you CYA level. So you want to make sure you have a good reading.

    Otherwise you will either waste a lot of chlorine or not use enough to clear the pool completely.
    18ft Round AG, Vinyl, 100LB Pentair Sand Filter, 1HP, June 2012, TF-100 w/SpeedStir

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    Mod Squad jblizzle's Avatar
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    Re: Help with green pool

    Use the K2006 to test the CYA.
    Jason, TFP Moderator
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    Re: Help with green pool

    I will do that after work with the k2006. I am out, or almost out of that test. I will need to order more.
    21,000 gal AG 30 foot round pool. Sand Filter. 1.5 hp pump.
    360 gallon 2015 relay hot springs hot tub
    North Dakota

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    Re: Help with green pool

    Quote Originally Posted by jblizzle View Post
    Use the K2006 to test the CYA.
    K2006 cya test says 55. Should I drain some water or go ahead with slam?
    21,000 gal AG 30 foot round pool. Sand Filter. 1.5 hp pump.
    360 gallon 2015 relay hot springs hot tub
    North Dakota

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    Mod Squad jblizzle's Avatar
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    Re: Help with green pool

    SLAM away, that CYA is reasonable.
    Jason, TFP Moderator
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    Re: Help with green pool

    Here is a complete test result list

    CYA 55
    FC 7
    Cc 0
    PH 7.7
    TA 70

    Is that ph acceptable for SLAMing? I put in 3 gallons of bleach last night before bed. Water looks a lot clearer.
    21,000 gal AG 30 foot round pool. Sand Filter. 1.5 hp pump.
    360 gallon 2015 relay hot springs hot tub
    North Dakota

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    Mod Squad jblizzle's Avatar
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    Re: Help with green pool

    First step listed in the SLAM article is to lower the pH
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    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Help with green pool

    Quote Originally Posted by jblizzle View Post
    First step listed in the SLAM article is to lower the pH
    Does SLAMing raise ph?
    21,000 gal AG 30 foot round pool. Sand Filter. 1.5 hp pump.
    360 gallon 2015 relay hot springs hot tub
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    Mod Squad jblizzle's Avatar
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    Re: Help with green pool

    Whenever you add FC with bleach it raises the pH ... which is why you should start with a low pH. Since you can not test the pH while the FC > 10ppm.

    When the FC is consumes, the pH comes back down making the bleach effectively pH neutral.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Help with green pool

    Quote Originally Posted by jblizzle View Post
    Whenever you add FC with bleach it raises the pH ... which is why you should start with a low pH. Since you can not test the pH while the FC > 10ppm.

    When the FC is consumes, the pH comes back down making the bleach effectively pH neutral.
    Good to know. I added bleach last night so that's probably why it was higher today. Thanks!
    21,000 gal AG 30 foot round pool. Sand Filter. 1.5 hp pump.
    360 gallon 2015 relay hot springs hot tub
    North Dakota

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    Re: Help with green pool

    I've been SLAMing, brushing and vacuuming and I THINK (not quite sure) the water looks clear, but let me know what you guys think please! I'm keeping the pool at SLAM levels through today and will test the Overnight chlorine loss tonight. Do you guys think the water needs to be clearer? I will attach a picture, but I can see the wrinkles clearly on the bottom of the liner, so I think that is a good sign. I know that I need to vacuum the middle, I just need to get in the water to do that, or let Diver Dave out for another few hours.
    Attached Images Attached Images
    21,000 gal AG 30 foot round pool. Sand Filter. 1.5 hp pump.
    360 gallon 2015 relay hot springs hot tub
    North Dakota

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    Re: Help with green pool

    Looks pretty clear ... I would get that dirt out one way or another though.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Re: Help with green pool

    Thanks, I'll put my husband up to it! I'm in North Dakota, so the water is still pretty chilly :/
    21,000 gal AG 30 foot round pool. Sand Filter. 1.5 hp pump.
    360 gallon 2015 relay hot springs hot tub
    North Dakota

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    Re: Help with green pool

    My water is clear. The CC is 0 and FC lost 3 ppm overnight. It was 17 last night and 14 this morning, but it rained pretty good here last night. Should I continue to keep the chlorine at SLAM levels or would I be wasting bleach at this point. I'm wondering if the rain was the culprit for the extra loss of 2 ppm.
    21,000 gal AG 30 foot round pool. Sand Filter. 1.5 hp pump.
    360 gallon 2015 relay hot springs hot tub
    North Dakota

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