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Thread: Can you reduce the FC level?

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    Can you reduce the FC level?

    Hi, we are pretty new with all of this pool stuff, we are on a losing battle with the water quality. We have finally got almost everything back to within normal ranges, our CYA is slightly high, but we are slowly draining and refilling pool to get on top of this.

    Unfortunately our FC is at least 10ppm.

    Any help would be appreciated!
    Hayley
    18' Round ABG (8000 gallon)
    Hayward X-Stream Cartridge Filter
    1.5hp Hayward PowerFlo Matrix Pump
    80 sq. ft. solar panels
    Goldline automated solar controller

  2. Back To Top    #2
    Guest
    Please post a full set of test results and not just say things are 'in normal range'. That really tells us nothing. A FC of 10 ppm may or may not be too high. It really depends on what your current CYA reading is. Even with normal CYA of 30-50 ppm 10 ppm or less FC is swimmable.

    Read the Stickie entiltled "Help Us Help You". It will give you a good idea of what info we need.
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    Butterfly's Avatar
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    Re: Can you reduce the FC level?

    Quote Originally Posted by hayleywebb25
    Hi, we are pretty new with all of this pool stuff, we are on a losing battle with the water quality. We have finally got almost everything back to within normal ranges, our CYA is slightly high, but we are slowly draining and refilling pool to get on top of this.

    Unfortunately our FC is at least 10ppm.

    Any help would be appreciated!
    Hayley
    Welcome to TFP! You have come to the right place to get your pool corrected....but the more info the better. Please follow Waterbear's suggestion and then the 'show can get on the road'! btw, there is no such thing as a 'loosing battle' with the water quality when you have BBB and the support from TFP! Also, if you do not have a good test kit, I strongly urge you to get one from TFP. A good water test kit is the BEST investment we ever made in our pool, IMHO.

    Again, welcome! Joyce
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

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  4. Back To Top    #4
    Hi, thanks for your support, Sorry from the Aqua Check, results are as follows:

    PH: 7.4
    FC: 10ppm
    TA: 100 ppm
    CYA: 150ppm

    Can I buy a TFP kit in Australia?

    Type of pool: Inground, pump system - unsure (we are able to backflush the system if that helps), Capacity: 40,000lt or I think about 10000 gallons.

    Regards
    Hayley
    18' Round ABG (8000 gallon)
    Hayward X-Stream Cartridge Filter
    1.5hp Hayward PowerFlo Matrix Pump
    80 sq. ft. solar panels
    Goldline automated solar controller

  5. Back To Top    #5
    Ohm_Boy's Avatar
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    You shouldn't be too concerned with your FC right now. With a CYA of 150, that's going to be pretty close to your target minimum level anyway.
    There's a sticky about the 'best guess chart' regarding FC vs CYA somewhere in the chemistry/measurement/BBB topics, but I think it only goes to CYA=120, and recommends a minumim FC of 8.something and a target of over 10, so you shouldn't be concerned about being too high.
    [center:1kpalu48]Helpful Links: Pool School | CYA/Chlorine Chart | Pool Calculator[/center:1kpalu48]

  6. Back To Top    #6
    JasonLion's Avatar
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    The AquaCheck test strips have a fairly large variability on the CYA test, probably +-50, but CYA anywhere around 150 is way too high. From the sound of what you wrote you are working on getting the CYA down already. I suggest bringing it down to 80 or lower.

    As long as your CYA is around 150 you should be keeping FC at 12 at a minimum, and preferably closer to 15.

    A better test kit will help quite a bit. Duraleigh will hopefully be along soon to tell you about TF Test Kits. You could also look around to see if you can find the Taylor K-2006 of K-2006C test kits, which are very similar but with smaller quantities of reagents.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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