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Thread: when to close pool in oklahoma to avoid "greenage"

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    Join Date
    Jun 2013
    Newcastle, Oklahoma

    when to close pool in oklahoma to avoid "greenage"

    after reading a bunch on here about when to close and open pool, i get that algea grows in +60 degree water, so closing late and opening early is my best bet to avoiding a green nasty pool. however, if anyone here is familiar with Oklahoma, its not uncommon to have a week of 75-80 degree days in the dead of winter or have fall temps linger in 70s until well after Christmas.

    most folks are done swimming in thier pools around here from what i see at about the second week of Sept, when its getting too cool to want to be in the pool, but not yet below 60.

    i have no problem running pool for a few extra weeks after we are done using it if it would help with an easier opening in spring, but how do I chose when to give it one last shock and button it up for the year?
    Partially buried Doughboy Desert Spring 16 x 32, sport pool, with 7 ft deep middle, 20,000 gallons, Hayward Powerflo Matrix 1.5 HP 2 speed pump, 250 lb sandfilter, 2 Doughboy skimmers and 2 returns. 2 cascade fountains.
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    Charlie_R's Avatar
    Join Date
    May 2013
    Mexico, MO

    Re: when to close pool in oklahoma to avoid "greenage"

    When the pool water consistently stays below 60? At least that's the reply I got from chem geek.
    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: when to close pool in oklahoma to avoid "greenage"

    Have you thought about just leaving it open year-round? We get those crazy out-of-season days here in Dallas, too. Most folks leave the pool open and set a controller to run the pump any time the temperature approaches freezing. But maybe you have colder days where you are than we have here, making it impractical to leave it open.
    Outdoor 14,000 gallon IG plaster pool built in 2000 with spillover spa, 2 hp WhisperFlo pump with MagneTek motor, Sta-Rite cartridge pool filter with 300 ft2 filtration area and 0.33 gpm/ft2 filtration rate, Aquabot Rapids 4WD robotic pool cleaner, Raypak digital gas heater, and Intermatic mechanical timer located in the Dallas-Fort Worth metroplex

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    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: when to close pool in oklahoma to avoid "greenage"

    Yeah, the cooler you let the water get, the best chance you have of opening to a clear pool. 60 degrees is sort of a mark, but I can assure you some forms of algae can develop below that.

    The nice thing, you will know exactly how to SLAM it back to clarity if you have some green in the Spring.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  5. Back To Top    #5
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: when to close pool in oklahoma to avoid "greenage"

    Below 60 degrees is a good rule of thumb. I go for below 50 degrees, which is more reliable (but not perfect).
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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  6. Back To Top    #6

    Join Date
    Dec 2009
    Central Massachusetts

    Re: when to close pool in oklahoma to avoid "greenage"

    I lived in OKC for 30 years, born and raised okie.
    If it were me, i'd button it up in mid november, and open second week of march
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

  7. Back To Top    #7
    BoDarville's Avatar
    Join Date
    Jun 2012
    DFW, Texas

    Re: when to close pool in oklahoma to avoid "greenage"

    Quote Originally Posted by bk406
    I lived in OKC for 30 years, born and raised okie. If it were me, i'd button it up in mid november, and open second week of march
    I would have to agree with this assessment.

    Here in DFW, we are close to the northern periphery of keeping a pool "open" (operational) year-round. Even here, it is not unusual for us to have several below freezing nighttime temps between mid-December through most of February. However, it is a rare day when the daytime high does not get above freezing. Sometimes it seems as though there is an invisible wall at the Red River. Seems like there is often a bigger difference in winter temps between DFW and OKC than the distance would suggest.
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  8. Back To Top    #8

    Re: when to close pool in oklahoma to avoid "greenage"

    With a solid cover and FC being at shock level during closing, I've never opened to any less than 6ppm FC. Normally I try to close in October and open in late March/April. It's usually not warm enough to swim until the end of May and too cool after mid September.

    Oddly enough I'm not even dreading my last swim being less than a month and a half away. This summer has been the worst I've experienced yet.

    Cheapest year for chlorine yet! I had a few cases left over from last season, don't think I bought more than 4 of 10% and I also got 2 12.5% on sale.

    The whole season, opening in mid April and closing in mid October will probably cost me only $130-140.
    [ Vogue Vectra 24' AG | Hard plumb: Hayward Power-Flo Matrix 1HP 2-speed, 27" sand filter & Pentair MiniMax 100 NG | Taylor K-2006 | Central IL ]
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  9. Back To Top    #9
    msgtdan's Avatar
    Join Date
    Jul 2011
    SW MO

    Re: when to close pool in oklahoma to avoid "greenage"

    I closed 10/3/12, due to a lack of trees I didn't cover. Mid March had the ice thaw and noticed the bottom had light algae, probably due to ground temp. Added chlorine and brushed, 2 days later pool refroze to 1" thick. End of March opened to same conditions, SLAMed the pool for 2 days and has been clear since. Ran the pump overnight on any night that was to get close to freezing.
    Dan D
    Used 2003 Aqua Leader 27'x52", 17,800 w/10" hopper, SwimPro SW256T 250# sand filter, Hayward PowerFlo LX pump 1hp impellor, Emerson 1 1/2 hp motor, setup Aug 2012 Summer 2011 used Summer Escapes Ring pool 14' x 42", Intex 1600gph sand filter, HTH 6 way test kitTF-100 w/stirrer, Well water @ FC=0, PH=7.2, TA=290, CH=320

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