Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: First Closing/Opening TFP Method

  1. Back To Top    #1
    cvgnus's Avatar
    Join Date
    May 2015
    Location
    Massapequa, NY
    Posts
    46

    First Closing/Opening TFP Method

    Hello all. Glad to be back here and I see the forum is buzzing!

    Overall I have had a pretty uneventful opening this season since closing the pool last season according to the advice given here. But have a few questions regarding my opening test results. The water was a tad cloudy right after opening but after topping off, adjusting FC, pH, TA, brushing and running the filter for a few hours the clarity and sparkle was back.

    Closing tests results: Early November

    FC 16
    CC 0
    (taken prior to raising to shock level)
    pH 7.2
    TA 90
    CH 225
    CYA 40
    Salt 1700
    Borate 50

    Opening test results: Mid May

    FC 3
    CC 0
    pH 7.4
    TA 50
    CH 100
    CYA 0
    Salt 1200
    Borate 15
    Ammonia 0

    The water was not circulated prior to testing but I did brush a bit. Is the drop in CH, CYA and Borate expected in a covered pool over about 7 months?
    5900 gal Oval 17' x 12' x 54" Sharkline Navigator 54 AGP; 1.5 HP Hayward Power-Flo LX Pump; Hayward EC65A DE Filter; AquaComfort XL ACT-750 Heat Pump;
    Hasa 8 gal Liquidator;
    TF-100 Test Kit w/Speedstir

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: First Closing/Opening TFP Method

    I think you should circulate and then test ... what is the point of brushing if you are not filtering it out?

    Snow and rain would certainly dilute the CH and borates and CYA
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  3. Back To Top    #3
    cvgnus's Avatar
    Join Date
    May 2015
    Location
    Massapequa, NY
    Posts
    46

    Re: First Closing/Opening TFP Method

    I bushed prior to filtering to mix the water a bit to see what the condition of my water was after 7 months of sitting under a cover. No water from rain or snow infiltrated the cover as the water level was the same 2" below the inlet.
    5900 gal Oval 17' x 12' x 54" Sharkline Navigator 54 AGP; 1.5 HP Hayward Power-Flo LX Pump; Hayward EC65A DE Filter; AquaComfort XL ACT-750 Heat Pump;
    Hasa 8 gal Liquidator;
    TF-100 Test Kit w/Speedstir

  4. Back To Top    #4
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: First Closing/Opening TFP Method

    So were the Nov. numbers before you partially drained the pool?
    If so, then of course the CH, borates, and CYA would be reduced from the tap water.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  5. Back To Top    #5
    cvgnus's Avatar
    Join Date
    May 2015
    Location
    Massapequa, NY
    Posts
    46

    Re: First Closing/Opening TFP Method

    Yes the November numbers were just before I lowered the water to below the inlet. May numbers were _before_ I added water to the pool. There was no water of any kind added to the pool between November closing numbers and May opening numbers. If I did add 12" to 16" inches of water it could not explain the CYA of 0. Sorry if I was not clear in my posts
    5900 gal Oval 17' x 12' x 54" Sharkline Navigator 54 AGP; 1.5 HP Hayward Power-Flo LX Pump; Hayward EC65A DE Filter; AquaComfort XL ACT-750 Heat Pump;
    Hasa 8 gal Liquidator;
    TF-100 Test Kit w/Speedstir

  6. Back To Top    #6

    Join Date
    Aug 2014
    Location
    Northern IL
    Posts
    4,615

    Re: First Closing/Opening TFP Method

    Always best to circulate for a couple of hours before testing and adjusting.

Posting Permissions

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