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Thread: The numbers game

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    The numbers game

    My pool has been open for a few weeks and looks really good. Numbers are solid. The temperature is still really cold and we will not be swimming for a while. Should I just keep the FC and pH at the target levels? CYA is around 50-55. I have been keeping the FC around 5-10. According to the CYA chart my FC should not be below 4. Am I doing this right? thanks in advance for your replies.
    12,000 gal Octagon vinyl in-ground pool. Hayward S220 sand filter 3/4 hp pump, heat pump heater

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    pwrstrk's Avatar
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    The numbers game

    I think your doing fine. Just maintain your levels like your are. Make sure you don't let your FC fall below the min. Do you think your CYA is closer to 50 or 60 ?
    Your using liquid chlorine I hope ?
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Patrick_B's Avatar
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    Re: The numbers game

    Sounds like you are doing well with FC and have an understanding. Your range is a little broad, but if you understand the target for Cya and you aren't letting it slack, then you are on the right track with that.
    TFP Moderator
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    Charlie_R's Avatar
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    Re: The numbers game

    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

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    Re: The numbers game

    Fresh #'s:

    FC 4
    CC 0.5
    CYA 50
    Alk 100
    pH 7.8

    Yes I am using liquid bleach, and b/c the FC is four, I will add about 41oz. to bring back up to 7. Also add a little Muriatic acid.
    12,000 gal Octagon vinyl in-ground pool. Hayward S220 sand filter 3/4 hp pump, heat pump heater

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    pwrstrk's Avatar
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    The numbers game

    Yep raise your FC up. Your right at the min as you know. When you get into higher chlorine demand you can go to 8. That'll give you more wiggle room for burn off so you don't fall below the minimum.
    Thanks for the test results. Your doing a good job !
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Patrick_B's Avatar
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    Re: The numbers game

    +1 to Jeff's comment.

    Bring that Chlorine up so you have some residual to spare at all times.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

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