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Thread: FC Question

  1. Back To Top    #1

    Join Date
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    Lebanon,Tn
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    FC Question

    FC-7
    PH-7.4
    TA-90
    CYA-60
    BORAX-50
    WATER TEMP 67 THIS MORNING
    The question I have is my FC is running a 6 to a 7, people and pool store are telling me that is to high, I have my SWG at 20 percent as low as it can go. I am thinking as soon as it warms up and we start swimming it will go down to 4 to 5. but until then is this alright, or do i need to shut off during the middle of the day so sun will take some?
    21x42 olympic sports pool
    18000 gal
    Intelliflo vs pump
    Pentair ic40 SWG
    Suntouch control
    TR100 Pentair sand filter
    Letro ledgen II pool cleaner
    Vinyl liner
    TF Test Kit's TF100

  2. Back To Top    #2

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    Re: FC Qustion

    Take a look at the chart here pool-school/chlorine_cya_chart_shock.

    Pool stores tell you that your FC is too high because honestly, they were told that in the beginning and they just don't know any better. No one ever explained to them what the chemical relationship between CYA and chlorine was. So, a FC of 7 with a CYA of 6 is PERFECT! Now go swimming if you can stand being cold!

    ETA: Ok, my bad. I just realized that you are running a SWCG. In that case, you can let your FC hang around 4 ppm if you like. You can still run it at an FC of 7 ppm without problems but that may be hard to do because your cell is putting out a fair amount of FC. You can shut the cell off for a while and let the FC drift down to 4 if you like.

  3. Back To Top    #3

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    Re: FC Qustion

    Thanks 257, I have a tricked out 300RUM, and love it.
    21x42 olympic sports pool
    18000 gal
    Intelliflo vs pump
    Pentair ic40 SWG
    Suntouch control
    TR100 Pentair sand filter
    Letro ledgen II pool cleaner
    Vinyl liner
    TF Test Kit's TF100

  4. Back To Top    #4

    Join Date
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    Location
    Denton, TX
    Posts
    5,061

    Re: FC Qustion

    Quote Originally Posted by fishunt
    Thanks 257, I have a tricked out 300RUM, and love it.

    Take a look at my edit above. Check your PM inbox regarding your .300 RUM. We can talk.

  5. Back To Top    #5

    Join Date
    Mar 2012
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    Lebanon,Tn
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    Re: FC Qustion

    On the link you just gave me it says 3 to 4 for a SWG pool, so 7 is alright?
    21x42 olympic sports pool
    18000 gal
    Intelliflo vs pump
    Pentair ic40 SWG
    Suntouch control
    TR100 Pentair sand filter
    Letro ledgen II pool cleaner
    Vinyl liner
    TF Test Kit's TF100

  6. Back To Top    #6

    Join Date
    Mar 2012
    Location
    Lebanon,Tn
    Posts
    47

    Re: FC Qustion

    Thanks, I will post a pic of the gun.
    21x42 olympic sports pool
    18000 gal
    Intelliflo vs pump
    Pentair ic40 SWG
    Suntouch control
    TR100 Pentair sand filter
    Letro ledgen II pool cleaner
    Vinyl liner
    TF Test Kit's TF100

  7. Back To Top    #7

    Join Date
    Mar 2012
    Location
    Lebanon,Tn
    Posts
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    Re: FC Qustion

    21x42 olympic sports pool
    18000 gal
    Intelliflo vs pump
    Pentair ic40 SWG
    Suntouch control
    TR100 Pentair sand filter
    Letro ledgen II pool cleaner
    Vinyl liner
    TF Test Kit's TF100

  8. Back To Top    #8

    Join Date
    Feb 2008
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    Denton, TX
    Posts
    5,061

    Re: FC Qustion

    Quote Originally Posted by fishunt
    On the link you just gave me it says 3 to 4 for a SWG pool, so 7 is alright?
    Yep...see my edited text to my original post.

  9. Back To Top    #9
    Mod Squad jblizzle's Avatar
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    Re: FC Qustion

    Quote Originally Posted by fishunt
    On the link you just gave me it says 3 to 4 for a SWG pool, so 7 is alright?
    No problem being a little high ... just NEVER get too low. It is generally accepted as safe for swimming up to shock level which is a FC of 18-24ppm for your CYA of 60ppm.
    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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  10. Back To Top    #10

    Join Date
    Mar 2012
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    Lebanon,Tn
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    Re: FC Qustion

    Thanks, Yall have been very helpful.
    21x42 olympic sports pool
    18000 gal
    Intelliflo vs pump
    Pentair ic40 SWG
    Suntouch control
    TR100 Pentair sand filter
    Letro ledgen II pool cleaner
    Vinyl liner
    TF Test Kit's TF100

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