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Thread: Extreme bleach usage, pool drops from TC 6 to 1-2 in 24hrs

  1. Back To Top    #1

    Join Date
    Mar 2011
    Location
    Tempe/AZ
    Posts
    117

    Extreme bleach usage, pool drops from TC 6 to 1-2 in 24hrs

    Hello, just as the subject says my pool is eating a ton of bleach. I'm a new owner to this pool which was built back in the 1980's. It's an inground pool located in Phoenix, AZ. So keep in mind we have extreme desert heat here and the average ambient temps now are 105 during the day and upper 80's to low 90's at night. My pool temp is 92 degrees currently. I haven't owned the pool long enough to wonder if it's just the heat eating through the bleach or if something else is wrong. My numbers are pretty solid, yesterday I ran a full test of everything and today i checked my FC and it was down to 1 already.

    25,300 gallons in ground, plaster
    FC - 1 (I try to keep this at 6 if possible)
    CC - 0
    TC - 1
    pH - 7.5
    T/A - 110
    CH - 230
    CYA - 50
    Temp - 92

    I have a pentair sand filter and my water is currently crystal clear. A week ago today we had that giant haboob come through and cake the phoenix area with 2-3" of dust. My pool has finally recovered and it's back to clear. Could the sand in my filter be bad and need to be changed out? I have no clue the last time it was changed but it's doing its job just fine. All the rest of my numbers seem to be in check except for my chlorine usage which is nearly a full 184oz of bleach daily, i'm using the 6% Walmart stuff. Maybe it's just living in the desert and extreme heat, no clue? Thoughts anyone? My pool gets sun pretty much all day from sun up to sun down with no shade and it's always sunny here in AZ.

    Eric
    28,000 gallon IG, Plaster Interior
    Hayward Sand Filter
    Pentair Inteliflow VS Pump 3HP
    20+ Years old and use TF Test Kit
    *Pool remodel coming 10/01/14 details to be in new thread

  2. Back To Top    #2
    Butterfly's Avatar
    Join Date
    May 2007
    Location
    South Carolina
    Posts
    10,045

    Re: Extreme bleach usage, pool drops from TC 6 to 1-2 in 24h

    Well, you should do an OCLT and rule out (or in) organics.

    After you determine whether or not you need to shock, then you may consider raising your CYA up to help w/the extreme sun & heat.

    How did you get the dust/dirt from the haboob out of your pool?
    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.

    ~ One should not use a sledge hammer to swat a mosquito. ~

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  3. Back To Top    #3

    Join Date
    Mar 2011
    Location
    Tempe/AZ
    Posts
    117

    Re: Extreme bleach usage, pool drops from TC 6 to 1-2 in 24h

    What is oclt?

    28,000 gallon IG, Plaster Interior
    Hayward Sand Filter
    Pentair Inteliflow VS Pump 3HP
    20+ Years old and use TF Test Kit
    *Pool remodel coming 10/01/14 details to be in new thread

  4. Back To Top    #4
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Extreme bleach usage, pool drops from TC 6 to 1-2 in 24h

    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

  5. Back To Top    #5

    Join Date
    Mar 2011
    Location
    Tempe/AZ
    Posts
    117

    Re: Extreme bleach usage, pool drops from TC 6 to 1-2 in 24h

    I'm going to say i'll need to shock the pool. After the big storm here in AZ the news people said that people should sock their pools immediately after a big dust storm like that. So it's a good chance i'll have to do that. Whats the best way to shock the pool appropriately? Do I buy a bag of shock or is there a different method TFP recommends to shock the pool properly?
    28,000 gallon IG, Plaster Interior
    Hayward Sand Filter
    Pentair Inteliflow VS Pump 3HP
    20+ Years old and use TF Test Kit
    *Pool remodel coming 10/01/14 details to be in new thread

  6. Back To Top    #6

    Join Date
    Mar 2011
    Location
    Tempe/AZ
    Posts
    117

    Re: Extreme bleach usage, pool drops from TC 6 to 1-2 in 24h

    yep i need to shock badly. At 3pm today I put a full 184oz of bleach in the pool and it's 8:30pm right now and my fc is already at 0. I'll poke around and find the proper way to shock my pool. Thanks for the heads up! Can't wait to get this chlorine issue taken care of.

    28,000 gallon IG, Plaster Interior
    Hayward Sand Filter
    Pentair Inteliflow VS Pump 3HP
    20+ Years old and use TF Test Kit
    *Pool remodel coming 10/01/14 details to be in new thread

  7. Back To Top    #7

    Join Date
    Mar 2009
    Location
    Charlotte, NC
    Posts
    530

    Re: Extreme bleach usage, pool drops from TC 6 to 1-2 in 24h

    19,800 gallons (closed/winter 18,654 gal); plaster; 18x34 Ft kidney bean shape, Depth 3Ft-5Ft. Built 1992
    Pentair Whisper Flow Pump 1HP. Winter safety cover w anchors.
    Sand filter, Pentair Sand Dollar Top Mount Model SD80; Effective Filtration Area 3.5SF
    - FlowRate 75GPM, 8Hr 36,000, 10Hr 45,000, 12Hr 54,000; Pressure Weight 50PSI
    BBB (Hayward Chlorinator when leave town). Polaris 360 cleaner.

  8. Back To Top    #8

    Join Date
    May 2011
    Location
    Clearwater, FL.
    Posts
    446

    Re: Extreme bleach usage, pool drops from TC 6 to 1-2 in 24h

    Hi Matrix311, Welcome to TFP!

    Do this, this will help us help you!
    http://www.troublefreepool.com/pool-...efore_you_post


    Chuck
    Swim n Play 21' round, expandable 72" liner, 6FT deep center, buried 14", 12,750 Gallons
    Waterway 1HP-2 speed with 22" Sand filter
    TF-100 test kit
    Thanks to TFP my pool is perfect all the time :party:
    I now suffer from Sparklypoolitis! :whoot:
    I am a Platinum contributor because I want everyone who comes here to Trouble Free Pool to have the same success that I enjoy with my pool and family.

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