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Thread: New user needs help

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    New user needs help

    After spending a fortune last year at the pool store a friend recommended this site to me. I started using the system about a month ago. My water looks fabulous but I can not keep my FC at the right level. I will shock up to 16, then by the next morning I am back to FC of 0.5. I read some other posts about this problem so today I bought an ammonia test, but that came back at 0. Do I just continue to shock every night until I can hold my FC or should I try something else. Any suggestions are appreciated.

    My numbers right now are:
    FC = 0.5
    CC = 1.0
    Alk = 120
    PH = 7.2
    CH = 250
    CYA = 50
    16 x 32 inground vinyl
    20,000 gallons
    cartridge filter

  2. Back To Top    #2
    dattia's Avatar
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    Re: New user needs help

    As long as you have a CC of 1.0, you should still be in the process of shocking the pool. If you are losing more than 1PPM of FC during the overnight hours, you should still be shocking the pool. It looks like you are not done yet... keep at it and your FC issue will probably clear up when the process is complete.
    27' round AG
    Hayward Matrix 1 1/2 HP Pump
    Hayward S210T Sand Filter

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    Mod Squad Bama Rambler's Avatar
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    Re: New user needs help

    You don't just shock at night. You try to keep it at shock level as often as once an hour until you start holding FC. Only shocking at night allows the algae to grow back during the time it's not at shock level. Read Pool School on how to shock your pool.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: New user needs help

    Thanks for the help. I guess I didn't understand that part. I thought if I shocked during the day that I would the chlorine to the sunlight. So according to the pool calculator I should shock to 16 (697 oz of 6% bleach). Then how often do I retest?
    16 x 32 inground vinyl
    20,000 gallons
    cartridge filter

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    Re: New user needs help

    I forgot to ask how long do I need to hold the shock level? I know it says you don't want to lose more than 1 FC overnight, but I don't want to maintain a FC of 15 do I? I have spent hours reading this awesome forum, but I still am struggling to understand it all.
    16 x 32 inground vinyl
    20,000 gallons
    cartridge filter

  6. Back To Top    #6
    dattia's Avatar
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    Re: New user needs help

    You will lose chlorine to sunlight, but you also have organics in the pool consuming your chlorine. Right now they are having all day to do their dirty work while the pool is under chlorinated. Don't worry about the misunderstanding of the shock process... most have us have been in your shoes, especially when there are products labeled SHOCK. It is a process. Once you get your pool up to shock level, try to keep it there by testing several times a day and adding more bleach as needed to bring it back up to the proper levels. This may require more bleach than you think, so I would stock up. The key is to sustain the shock level for a period of time until the organics have been killed off. You need to hold the shock level for as long as you have the chlorine consumption that you have now. The overnight loss of 1PPM or less indicates that the organics are gone and your chlorine will be able to sanitize your pool at much lower levels.
    27' round AG
    Hayward Matrix 1 1/2 HP Pump
    Hayward S210T Sand Filter

  7. Back To Top    #7

    Re: New user needs help

    I bought 8 - 182 oz jugs today. So I have a decent start. My husband thinks I might be crazy with the amount of bleach I am adding to the pool. It looks like I was never beating the monster by just shocking at night. Thanks for setting me in the right direction.
    16 x 32 inground vinyl
    20,000 gallons
    cartridge filter

  8. Back To Top    #8
    dattia's Avatar
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    Re: New user needs help

    Keep in mind that this process may take a few days and a lot of bleach. It has been different for all of us, but now that you understand that you must hold the levels at shock, you are on your way to a sparkly, healthy pool.
    27' round AG
    Hayward Matrix 1 1/2 HP Pump
    Hayward S210T Sand Filter

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    Re: New user needs help

    Just an update. At 11am I added 728oz of 6% bleach. At noon my readings were FC = 23 & CC = 2. At 1pm my readings were FC = 15.5 & CC = 2. At 2pm my reading were FC = 10.5 & CC = 2. I am going to add more bleach to reach a FC of 16. Shouldn't my CC be going down or am I just being impatient?
    16 x 32 inground vinyl
    20,000 gallons
    cartridge filter

  10. Back To Top    #10
    Mod Squad Bama Rambler's Avatar
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    Re: New user needs help

    You just need a little more patience. It's going to take a while of the FC being at shock level for the CC to start coming down.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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