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Thread: After party test results..

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    After party test results..

    I have started testing in the evenings after a suggestion here, but I was curious since this was the first test after a swim party so I tested this morning.

    FC 3.5
    CC .5
    TC 4
    pH 7.8
    TA 170
    CH 350-360
    CYA 80-90

    1) With FC that low I'm thinking that your suggestion would be to go to the pool calculator and add liquid bleach, is that right?
    2) Will adding liquid bleach throw off any other numbers
    3) pH went up but I am to expect that after a swim party right?
    4) TA also went up, but I believe that is to be expected too, right?

    5) This is only my second CYA test. The first was 5/28. I'm pretty sure I did the first one right when I got 80. This time the dot started to disappear closer to 90, but it was right between 80 and 90 when I was sure it was gone. Maybe my first one was off? Should I adjust this?
    6) Calcium hardness is still high - is there something I should add to this or it's not that bad?

    Thank you for all of your help. After reading back over my post, I see you all have helped me so much and I've learned from you. Thanks.
    Intex 20'x10'x52" 5,835 gallon above ground; vinyl; Intex 2,650-Gallon Sand Filter Pump; Intex Krystal Clear Saltwater System Model CS8110.

  2. Back To Top    #2

    Join Date
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    Re: After party test results..

    Quote Originally Posted by imcj
    1) With FC that low I'm thinking that your suggestion would be to go to the pool calculator and add liquid bleach, is that right?
    Yep.

    2) Will adding liquid bleach throw off any other numbers
    As long as it is plain ol' bleach, it shouldn't change any other numbers.

    3) pH went up but I am to expect that after a swim party right?
    Yes. Splashing and bather wastes contribute to this.

    4) TA also went up, but I believe that is to be expected too, right?
    How much did it go up? The TA shouldn't really change unless something was added recently (baking soda?).

    5) This is only my second CYA test. The first was 5/28. I'm pretty sure I did the first one right when I got 80. This time the dot started to disappear closer to 90, but it was right between 80 and 90 when I was sure it was gone. Maybe my first one was off? Should I adjust this?
    No. You can have a little variance in this depending on the ambient light available when testing. I always test mine at the same time of the day to avoid such a variance. I wouldn't add any CYA or drain anything since you are running a SWCG.

    6) Calcium hardness is still high - is there something I should add to this or it's not that bad?
    You CH isn't high enough to worry about. I would lower your TA using acid additions and aeration. Once your TA is down, the effect of having highish CH is much less apt to cause issues.

    Thank you for all of your help. After reading back over my post, I see you all have helped me so much and I've learned from you. Thanks.
    10K gallon IG gunite with waterfall; Pentair CC320P filter; WhisperFlo 2 HP pump
    TF Test Kits - Pool Math - Pool School
    "It depends."- JohnT

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    Re: After party test results..

    Thanks to you all I got # 1 and 3 right.

    On 6/1 TA was 150, it was 170 today. I haven't added anything. Do I need to do something?

    Thanks for your quick reply. I feel much better. I have to be somewhere in a little while, but I thought I'd add the liquid bleach before I left. My daughter would like to swim later today. As long as I leave the pump running that shouldn't be a problem, right?
    Intex 20'x10'x52" 5,835 gallon above ground; vinyl; Intex 2,650-Gallon Sand Filter Pump; Intex Krystal Clear Saltwater System Model CS8110.

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    Re: After party test results..

    I read here before that shock level is 31 for my pool because it was suggested that I go by the non-SWG chart because it seemed to be more effective.

    I haven't used the pool calculator very many times, but does that mean that I put in my now as 3.5 and my goal as 31? That is a lot of bleach I thought so I wanted to doublecheck first. I don't want to do anything catastrophic to the water.
    Intex 20'x10'x52" 5,835 gallon above ground; vinyl; Intex 2,650-Gallon Sand Filter Pump; Intex Krystal Clear Saltwater System Model CS8110.

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    Mod Squad zea3's Avatar
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    Re: After party test results..

    Your shock level should be 21 not 31. That would be 2.2 96 ounce jugs of 6% bleach. I got the same levels with SWG or Bleach as chlorine source.
    TFP Moderator
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    Butterfly's Avatar
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    Re: After party test results..

    Based on a CYA of 80, the shock level from the Chlorine/CYA Chart is 31 and the shock level from the Pool Calculator is 21.

    Both shock levels will work. One is more aggressive than the other.
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    Re: After party test results..

    The rise in the TA could be due to a water addition if your fill water has high TA (mine has TA 340).
    23,000 gallon in ground pool with rock waterfall and spillover spa, Aqualink control system, Polaris 380 cleaner, Purex Triton Clean&Clear Plus cartridge filter. Located in The Woodlands, Texas.

    Pool owner since Nov 2008, Trouble Free since April 2009. Happy to help when I can.

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    Re: After party test results..

    All I have on hand right now is 182 oz. of liquid bleach. Is that okay or don't bother with anything until I have the proper amount? If I just add this and leave my pump on how long until the girls can swim?

    I can go get more bleach tonight.
    Intex 20'x10'x52" 5,835 gallon above ground; vinyl; Intex 2,650-Gallon Sand Filter Pump; Intex Krystal Clear Saltwater System Model CS8110.

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    Re: After party test results..

    Some is better than none. Give the bleach 1/2 hour to circulate then it would be fine to swim.
    --paulr
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
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    Water testing instructions on one page

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    Re: After party test results..

    Okay, I ran to Walmart. I have plenty. Would you try to reach 21ppm or 31ppm - more aggressive or not? I can add the 212 oz. or 333 oz. Thanks.
    Intex 20'x10'x52" 5,835 gallon above ground; vinyl; Intex 2,650-Gallon Sand Filter Pump; Intex Krystal Clear Saltwater System Model CS8110.

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    dmanb2b's Avatar
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    Re: After party test results..

    Hang on...why are you looking to reach shock level?...is the water cloudy? If not just raise your FC by a few ppm....if cya is 90, your Target is 10ppm. There is not need to shock your pool if your CC are 0.5 or below and the water is clear.
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

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    Re: After party test results..

    No, the water is not cloudy. I guess I gathered that from Pool School Shock Your Pool "Many people also like to shock the pool when the FC level falls significantly, as it often does after a major storm or large swim party. This is done even if FC doesn't get all the way to zero, just to be sure everything is all right" and I guess I inferred it from the earlier answer to my post. Am I wrong? Should I only shock when the water is cloudy or when CC is over .5?
    Intex 20'x10'x52" 5,835 gallon above ground; vinyl; Intex 2,650-Gallon Sand Filter Pump; Intex Krystal Clear Saltwater System Model CS8110.

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    JasonLion's Avatar
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    Re: After party test results..

    There isn't a correct answer to that question. Some people do one thing, some the other. I am fond of raising the FC level half way towards shock level just in case in that kind of situation.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: After party test results..

    Okay, that's good to know. I did go ahead and shock this time, but I would like to do the halfway next time as a "just in case." Thanks.
    Intex 20'x10'x52" 5,835 gallon above ground; vinyl; Intex 2,650-Gallon Sand Filter Pump; Intex Krystal Clear Saltwater System Model CS8110.

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