Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 8 of 8

Thread: New homeowner's first test results from a winterized pool

  1. Back To Top    #1

    Join Date
    Dec 2014
    Location
    Rockville, MD
    Posts
    72

    New homeowner's first test results from a winterized pool

    TF-100 arrived yesterday! My wife had a puzzled look on her face as I ripped open the package and headed to the backyard to play with a pool that just had the last ice melt just days ago. Since we just bought the house, I was pretty anxious to see the condition of the water and what I'll be up against.

    I pushed back the water bags and the solid cover enough to access the water on one end. Water temperature was 49.5 (close to cover and edge). Using a rinsed container, I took a sample from the pool. However, with the amount of cover I removed, I did not get the suggested 1 foot deep water sample.

    The results:
    FC: 7.5
    CC: 6
    CH: 250
    TA: 60
    CYA: 95

    I was not expecting the clorine tests to be so high, especially for a pool that had been winterized since October, but expected CYA to be problematic due to the chemicals left by the previous owner. Could I have tainted my results by not obsessively rinsing the unknown sampling bucket from the pool shed? Could my shallow sampling location affect the results greatly? How bad does it look folks?

    Also, I'd like to inventory the remaining chemicals and ask you guys if they will ever be useful while using BBB. Want that in this thread or another?
    Pool: 40x15ft "Mt. Lake" shaped plaster IG (30k gallons with Borates)
    SWG: Circupool Si-45
    Pumps: Hayward MaxFlo VS (SP2302VSP) + Booster Pump for Polaris 180
    Filter: Pentair Tagelus TA-60D (Sand)
    Test Kit: TF-100 (with Speed Stir)

  2. Back To Top    #2
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    Location
    East Texas
    Posts
    9,002

    Re: New homeowner's first test results from a winterized pool

    Biggest question is-------was the water circulated a while before you took the sample?
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

  3. Back To Top    #3
    Casey's Avatar
    Join Date
    Apr 2007
    Location
    SW PA
    Posts
    10,157

    Re: New homeowner's first test results from a winterized pool

    Quote Originally Posted by woodyp View Post
    Biggest question is-------was the water circulated a while before you took the sample?
    I'm guessing it was not since he pushed the water bags in and pulled the cover back. If anything, It's good practice for you in using the kit. Get accurate testing after topping the pool off and running the pump and filter for an hour to circulate the pool water. You will more than likely find different test results.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  4. Back To Top    #4

    Join Date
    Dec 2014
    Location
    Rockville, MD
    Posts
    72

    Re: New homeowner's first test results from a winterized pool

    The pool is still winterized. Since I didn't witness the closure, and I haven't removed the cover, I would assume antifreeze in the lines and inlets and skimmers still plugged.... so no circulation.
    Pool: 40x15ft "Mt. Lake" shaped plaster IG (30k gallons with Borates)
    SWG: Circupool Si-45
    Pumps: Hayward MaxFlo VS (SP2302VSP) + Booster Pump for Polaris 180
    Filter: Pentair Tagelus TA-60D (Sand)
    Test Kit: TF-100 (with Speed Stir)

  5. Back To Top    #5

    Join Date
    Dec 2014
    Location
    Rockville, MD
    Posts
    72

    Re: New homeowner's first test results from a winterized pool

    And... It's snowing again..... I had a feeling that a non-circulated pool wouldn't be as accurate and it was, if anything, a good run through the kit. Do these numbers provide ANY foresight?
    Pool: 40x15ft "Mt. Lake" shaped plaster IG (30k gallons with Borates)
    SWG: Circupool Si-45
    Pumps: Hayward MaxFlo VS (SP2302VSP) + Booster Pump for Polaris 180
    Filter: Pentair Tagelus TA-60D (Sand)
    Test Kit: TF-100 (with Speed Stir)

  6. Back To Top    #6
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: New homeowner's first test results from a winterized pool

    Testing the water while the pool is winterized is often misleading. Once the pool is opened the numbers often change a fair bit. Still, it does give you some general hints about what to expect.

    CC of 6 could possibly be a problem. However, CC often disappears rapidly when the pool is opened, so I wouldn't worry about it very much.

    CYA of 95 is a little more worrying. Opening the pool will no doubt lower it a little, but it still seems likely you will be doing some water replacement right after opening.

    The other numbers look fine for the moment. They will likely need some tweaking once you open, but no big deal.

    Regardless of the above, getting experience with the test kit is totally worth it.
    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

  7. Back To Top    #7
    Mod Squad JVTrain's Avatar
    Join Date
    Feb 2014
    Location
    Central Minnesota
    Posts
    5,079

    Re: New homeowner's first test results from a winterized pool

    Numbers you got probably not all that useful other than maybe the CYA, CH, TA.

    The CYA looks a bit high but as Jason said, it should come down some when you open and fill up the pool, depending on how much the water level was dropped during closure.

    Nice to see that your CH and TA are in good places, assuming they don't change much when you get circulating.

    If you want more practice and for good reason, test the water you're going to be filling the pool with at opening. TA and CH levels will be the most useful, letting you know what chemical adjustments might need to be made after filling. Tap water should obviously have 0 CYA so I wouldn't bother wasting reagents on that, but you may have low levels of FC or CC if it's from a municipal supply. pH is likely close to normal but worth looking at as well. Whatever source you test from, collect the sample from the same supply point you'll be filling your pool. Let the water run for a few minutes before collecting the sample.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

  8. Back To Top    #8

    Join Date
    Dec 2014
    Location
    Rockville, MD
    Posts
    72

    Re: New homeowner's first test results from a winterized pool

    I have my opening scheduled for 4/11. The house purchase contract has a post-closing rider that requires the sellers to pay for issues found with the pool. The pool has to be professionally opened and inspected for us to make use of this rider. I'd be tempted to try myself, but with the rider and being new at this, it won't be bad to have professional help this time around. "Real" water samples coming soon after then.
    Pool: 40x15ft "Mt. Lake" shaped plaster IG (30k gallons with Borates)
    SWG: Circupool Si-45
    Pumps: Hayward MaxFlo VS (SP2302VSP) + Booster Pump for Polaris 180
    Filter: Pentair Tagelus TA-60D (Sand)
    Test Kit: TF-100 (with Speed Stir)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •