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Thread: ok to close??

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    heyjudect's Avatar
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    ok to close??

    Wonder if these levels are good to close for winter??
    TC=26
    TA=100
    pH =7.8/8.0
    CYA 70
    Above ground, round 27 ft, 19,000 gal, vinyl liner, sand filter. Going to add Kem-Tek KTK-50-0006 Pool and Spa 60-Percent Concentrated Algaecide, 1 Quart.

    Any suggestions?? Thanks!
    ABOVE GROUND, 27 ft round , 54 inch deep, 19,000 gallons, vinyl liner, sand filter. Pool is 15 years old. I will use TF-100 kit.

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    Mr Bruce's Avatar
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    Re: ok to close??

    I'd bump the pH down first.

    e:If it is that high. What was it before you raised FC that high?

    pH test is invalid with FC that high.
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
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    Re: ok to close??

    What is water temp?
    Bob - Palm Beach by San Juan Pools. approx 5000 gals., Pentair 320 cartridge filter (all new guts installed by me), Goldline SWG, 'New to me' Kreepy Krauly Sand Shark, Intermec 104 Timer Test kit: TF-100 w/Speed Stir

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    heyjudect's Avatar
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    Re: ok to close??

    for my size pool, is 26 oz of muriatic acid acceptable? And, I have never had to lower pH beofre, do I buy that at pool store or what??

    - - - Updated - - -

    water temp 74 degrees. Have to close now because going on vacation for 3 weeks.

    - - - Updated - - -

    I thought I was all set and was surprised when pH bounced up from 7.2 to 8 after tweaking alkalinity a bit!
    ABOVE GROUND, 27 ft round , 54 inch deep, 19,000 gallons, vinyl liner, sand filter. Pool is 15 years old. I will use TF-100 kit.

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    Re: ok to close??

    If you've never had to lower pH before disregard what I said. pH test reads false high at FC > 10.

    It's usually better to wait until the water is 60 degrees F or lower. You might get lucky.
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
    Test Kits - Pool Math - Chlorine/CYA/Target/Slam Chart

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    heyjudect's Avatar
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    Re: ok to close??

    Thanks so much!! glad I mentioned that just yesterday before adding bleach to get FC to closing level my pH was a perfect 7.2.....I know I should wait til water 60 degrees but have no choice really, if I am going away for 3 weeks, pool will be a mess when I get home if I leave it open, leaves are already falling!,,,do not dare run filter etc while away and do not trust anyone to care for it in my absence. What are my chances pool will be ok when I open if I close with the water temp as it is now? Always have opened to a perfectly clear pool every spring! Thoughts?
    ABOVE GROUND, 27 ft round , 54 inch deep, 19,000 gallons, vinyl liner, sand filter. Pool is 15 years old. I will use TF-100 kit.

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    Re: ok to close??

    Quote Originally Posted by heyjudect View Post
    for my size pool, is 26 oz of muriatic acid acceptable? And, I have never had to lower pH beofre, do I buy that at pool store or what??

    - - - Updated - - -

    water temp 74 degrees. Have to close now because going on vacation for 3 weeks.

    - - - Updated - - -

    I thought I was all set and was surprised when pH bounced up from 7.2 to 8 after tweaking alkalinity a bit!
    Was the 7.2 from before or after you "tweaked" TA?

    Depending on what you were trying to do, changes in TA can effect pH. What was your TA, what were you trying to adjust to, and what chemical(s) did you use?

    We don't normally recommend messing with TA if the pH is somewhat stable, & the TA is not extremely low or high (which would normally cause pH issues anyway).

    According to Pool Math, 26oz of 31.45% MA will lower pH by .33, and also lower TA by 5.4, in 19K gallons. I would hold off on it until we understand your pH/TA adjustment.
    Dom - TFP Guide
    Intex 18' X 48" Ultra Frame AGP 6700 gallons | Two Intex CS8110 SWG's | Hayward Pro Series 21" Sandfilter | Hayward 1.5HP Power Flo Matrix pump | Hayward Thru-wall Skimmer | Wanda the Whale | 72 sq ft of Sungrabber Solar Panels with Hayward GLC-2P-A | Taylor K2006 Test Kit, Sample Sizer & Speed Stir | Click Here To Become a TFP Supporter!

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    Re: ok to close??

    pH was 7.2 before adding baking soda to raise TA, pH was 7.5 after that. Then I added the chlorine to boost FC for closing last night. Now this morning pH is 7.8/almost 8. So, can I assume pH jumped due to FC being raised?
    ABOVE GROUND, 27 ft round , 54 inch deep, 19,000 gallons, vinyl liner, sand filter. Pool is 15 years old. I will use TF-100 kit.

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    Re: ok to close??

    No, the pH test just reads high when FC is that high.

    Like Dom said you don't need to adjust TA unless it's causing pH problems.

    Sounds like with your situation you really don't have a choice other than to leave it alone and if you have a "project" come spring just deal with it then.
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
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    Re: ok to close??

    I'm sure you'll be fine then. How stable is your pH normally?

    As Mr Bruce mentioned, what's done is done. If there are any ill effects they can be dealt with in the spring.

    Closing temp will be a bigger influence as far as algae is concerned. If I was forced to close my pool with the water temp in the mid 70's I would definitely use a Polyquat 60 algaecide at closing.
    Dom - TFP Guide
    Intex 18' X 48" Ultra Frame AGP 6700 gallons | Two Intex CS8110 SWG's | Hayward Pro Series 21" Sandfilter | Hayward 1.5HP Power Flo Matrix pump | Hayward Thru-wall Skimmer | Wanda the Whale | 72 sq ft of Sungrabber Solar Panels with Hayward GLC-2P-A | Taylor K2006 Test Kit, Sample Sizer & Speed Stir | Click Here To Become a TFP Supporter!

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    heyjudect's Avatar
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    Re: ok to close??

    Thank you so much everybody! I always have a perfect pH and now I realize I should not have been so anal about my alkalinity not being perfect and left well enough alone. I am just glad I did not add tons of baking soda! I just rechecked my pH this evening and it is 7.8 and all set to close. Going to definitely add Kem-Tek KTK-50-0006 Pool and Spa 60-Percent Concentrated Algaecide, 1 Quart. Hope my spring opening is not horrible, thanks for the great support!
    ABOVE GROUND, 27 ft round , 54 inch deep, 19,000 gallons, vinyl liner, sand filter. Pool is 15 years old. I will use TF-100 kit.

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    Re: ok to close??

    Quote Originally Posted by heyjudect View Post
    Thank you so much everybody! I always have a perfect pH and now I realize I should not have been so anal about my alkalinity not being perfect and left well enough alone. I am just glad I did not add tons of baking soda! I just rechecked my pH this evening and it is 7.8 and all set to close. Going to definitely add Kem-Tek KTK-50-0006 Pool and Spa 60-Percent Concentrated Algaecide, 1 Quart. Hope my spring opening is not horrible, thanks for the great support!
    Sounds like you have a good plan laid out.

    Don't worry about opening, we'll be here to help if you need it.
    Dom - TFP Guide
    Intex 18' X 48" Ultra Frame AGP 6700 gallons | Two Intex CS8110 SWG's | Hayward Pro Series 21" Sandfilter | Hayward 1.5HP Power Flo Matrix pump | Hayward Thru-wall Skimmer | Wanda the Whale | 72 sq ft of Sungrabber Solar Panels with Hayward GLC-2P-A | Taylor K2006 Test Kit, Sample Sizer & Speed Stir | Click Here To Become a TFP Supporter!

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    heyjudect's Avatar
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    Re: ok to close??

    thanks
    ABOVE GROUND, 27 ft round , 54 inch deep, 19,000 gallons, vinyl liner, sand filter. Pool is 15 years old. I will use TF-100 kit.

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