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Thread: How long does it take???

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    soupy8728's Avatar
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    How long does it take???

    Ok,

    I know this is a beat to death subject but I can't really find anything on here that meets all of my criteria for this question. I just bought a house that has an inground pool, plaster, approx 30K gallons with an attached spa, solar heated. It hadn't been drained in over 5 years and the water (I was told by my pool guy...who I have since fired) was chemically saturated. We drained the pool, did an acid wash, repaired a broken light, and replaced a missing drain cover. I refilled the pool and started noticing algae after about a week....this is why I fired the pool guy....he said everything was "good to go". Anyways, here is my question:

    How long does it take to get the FC levels to where they need to be?

    FC - 0
    PH - 7.8
    CYA - 50-60
    TA - 130
    Water temp - 82-86 degrees.
    Tested with Taylor test kit.


    I have been pouring liquid bleach in the skimmer, added one of those floats with chlorine tablets in it, and I have an inline chlorinator with tablets in it as well. Why is my FC still 0? Thanks.

    p.s. The algae is gone now.
    IG Plaster with raised spill-over Spa, ~26,000 gallons, Built 2001
    Cartridge filter
    Solar heated

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    JasonLion's Avatar
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    Re: How long does it take???

    There are various things that can be consuming chlorine. Algae is the most obvious possibility, but other things you can't see, like ammonia, can also consume chlorine. You need to keep adding chlorine until you can maintain an FC reading overnight. How long that takes is unpredictable, but once achieved, you should be good from then on.

    By the by, I'm not sure if you realize or not that you need to be adding chlorine daily in normal operation.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    soupy8728's Avatar
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    Re: How long does it take???

    Yes, I realize that I need to add chlorine daily (read that in Pool School )..... I just don't see any chlorine levels going up. It says on the test kit that I should be around 4-5 I think?? Since I have the attached spa.
    IG Plaster with raised spill-over Spa, ~26,000 gallons, Built 2001
    Cartridge filter
    Solar heated

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    JasonLion's Avatar
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    Re: How long does it take???

    Your target FC level is 4 to 9, based on CYA being somewhere around 55.

    Until you can maintain an FC level you should SLAM the pool. Your SLAM level is FC around 22. See the instructions on SLAMing the pool in the How To section of Pool School.
    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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    soupy8728's Avatar
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    Re: How long does it take???

    Ok..that makes sense. I have just not been adding enough. Thanks!!
    IG Plaster with raised spill-over Spa, ~26,000 gallons, Built 2001
    Cartridge filter
    Solar heated

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    Isaac-1's Avatar
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    Re: How long does it take???

    If your CYA is really in the 50-60 range then you need to avoid adding more stabilized chlorine (pucks, etc,) or else you will be facing another partial drain and replacement of water in the near future. In general we suggest a maximum CYA level of 50 ppm for most sunbelt conditions, 60 is pushing it for manually chlorinated pools.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    Mod Squad jblizzle's Avatar
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    Re: How long does it take???

    Which Taylor test kit are you using?

    I did not see anyone else say that we do not recommend pouring bleach into the skimmer. Just pour it slowly in front of a return jet. If there was nothing in the pool consuming the FC, then it would show up on the test within 30 minutes.

    And get all those tablets out of the chlorinator before your CYA is even higher. Read this: How to Chlorinate Your Pool
    Jason, TFP Moderator
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    soupy8728's Avatar
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    Re: How long does it take???

    What would be the difference of pouring it into the skimmer vice in front of a jet? Isn't it all the same water? I'll take the pucks out when I get home. Didn't realize that would boost the CYA as well.

    - - - Updated - - -

    [QUOTE=jblizzle;633782]Which Taylor test kit are you using?

    It's a Leslie Pool kit but all the bottles inside of it say Taylor so I'm guessing it's a K-2006? When I look that kit up online, it looks just like the one I have.
    IG Plaster with raised spill-over Spa, ~26,000 gallons, Built 2001
    Cartridge filter
    Solar heated

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    Re: How long does it take???

    By pouring bleach slowly in front of a return, the chlorine is diluted before it enters your pump. When you pour in the skimmer, highly concentrated chlorine water is going directly to your pump and can damage it. I'm not sure if it's the actual bleach, or the high ph of the bleach that is bad for the components of your pump.

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    Mod Squad jblizzle's Avatar
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    Re: How long does it take???

    Do you use a powder for the FAS-DPD chlorine test? Or is your test a pink or yellow color matching like the pH test?
    Jason, TFP Moderator
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    soupy8728's Avatar
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    Re: How long does it take???

    It's a pink color matching test. It says to add 5 drops of R-001 and 5 drops of R-002. Everytime I've tested it...it just reads zero. There isn't any algae in the pool since I started adding the bleach. I brush and vacuum it daily and check my levels every night.
    IG Plaster with raised spill-over Spa, ~26,000 gallons, Built 2001
    Cartridge filter
    Solar heated

  12. Back To Top    #12
    JasonLion's Avatar
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    Re: How long does it take???

    That is a DPD chlorine test. It will read zero when FC is around 12 or higher, as well as when it is actually zero.
    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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    soupy8728's Avatar
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    Re: How long does it take???

    ok...so what test should I get then? and from where?
    IG Plaster with raised spill-over Spa, ~26,000 gallons, Built 2001
    Cartridge filter
    Solar heated

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    Mod Squad JVTrain's Avatar
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    Re: How long does it take???

    http://tftestkits.net/FAS-DPD-Chlori...-test-p47.html

    That' s a good FAS-DPD if you already have a good drop based kit for your other tests.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
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    Mod Squad jblizzle's Avatar
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    Re: How long does it take???

    If you already have a kit that does the pH, TA, CH and CYA, then just add the FAS-DPD chlorine test that Joel linked to above. That is the key to the recommended test kits.
    Jason, TFP Moderator
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  16. Back To Top    #16
    soupy8728's Avatar
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    Re: How long does it take???

    Thanks everyone. Just ordered my new test kit. I'll post the results once I get it. I also took out the chlorine pucks last night.
    IG Plaster with raised spill-over Spa, ~26,000 gallons, Built 2001
    Cartridge filter
    Solar heated

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    soupy8728's Avatar
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    Re: How long does it take???

    Ok...got the new test kit today. Here are my results:

    FC - 4
    CC - 0
    TC - 4
    PH - 7.8
    TA - 150
    CYA - 55
    CH - 270
    Water temp 79F

    I added some muratic acid to bring the PH down to 7.5 and I'm gonna add some bleach to bring the FC up to around 6. I'll do the chlorine loss test tonight. Pool looks very clear and I don't see any signs of algae. I even opened up the filter canister and checked the cartridges and they were clean.
    IG Plaster with raised spill-over Spa, ~26,000 gallons, Built 2001
    Cartridge filter
    Solar heated

  18. Back To Top    #18
    Mod Squad jblizzle's Avatar
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    Re: How long does it take???

    Sounds good. Don't use any solid forms of chlorine as you CYA is right at the top of the recommended range.
    Remember a FC of 4ppm is your minimum so I might shoot for 7ppm each day.
    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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  19. Back To Top    #19
    Casey's Avatar
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    Re: How long does it take???

    Glad you got the test kit.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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    soupy8728's Avatar
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    Re: How long does it take???



    IG Plaster with raised spill-over Spa, ~26,000 gallons, Built 2001
    Cartridge filter
    Solar heated

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