Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: Gallons Calculation & First TF-100 Results

  1. Back To Top    #1

    Gallons Calculation & First TF-100 Results

    Recently purchased house (October 2013). It was a foreclosure and pool was dark green. Pool is fiberglass and installed in 1995. I hired someone to bring back water. In the process, we found 3 metal bar stools, a 25" tube TV with the tube shattered and various other items in the bottom of the pool. Water is crystal clear now. There are some rust stains here and there and the first 14" or so of the vertical wall in the deep end is stained brownish. Pool service tried a few different stain treatments without success. Might try working on the stains again in a few months - not a priority right now.

    I still have a pool service while I learn from Pool School. I need assistance with gallons calculation. Each website I try gives a different result from 13k to about 18k. My pool is kidney bean shaped.

    15' x 32' (Outer dimensions including coping band)
    The first 9.5' are 3' deep x ~14' wide
    The next 9 feet are 5'4" deep x ~ 14' wide
    The final 10.5 feet are 7.5" x ~14' wide
    There is a ledge about 3' down in the middle and deep portions of the pool

    What would you estimate volume at?

    My first attempt at TF-100
    FC = 2
    CC = 0.5
    TC = 2.5
    CH = 425
    TA = 100
    CYA = 40
    Ph = 8.0

    Above the water line, the fiberglass is smooth, below the water line is rough, mild milkiness if I rub the walls below water line. My cartridge has a white film each time it is rinsed that leave white flakes in my grass.

    Thanks for any input!
    Fiberglass Caged Pool Circa 1995
    15' x 32' - 16k Gallons
    Central, FL
    Hayward Cartridge Filter System

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

    Re: Gallons Calculation & First TF-100 Results

    Welcome to TFP!!!

    I would use about 16k as the volume. As you add chemicals and test ... see if you are hitting the target, if not adjust the volume until you do ... it is not very critical.

    If the surface is rough and white I would guess you have calcium scaling as a result of the CH being a little high and likely the pH staying too high. You need to keep the pH in range to stop the scale from forming and if you keep it on the low side (7.0-7.4), with a lot of brushing, it should go away (think months ... not days).
    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

    Re: Gallons Calculation & First TF-100 Results

    Thanks Jason! I will test again in a few days to continue to get a feel for the process. Will do away with the pool service in the next 30 days or so. Looking forward to the TFP method!
    Fiberglass Caged Pool Circa 1995
    15' x 32' - 16k Gallons
    Central, FL
    Hayward Cartridge Filter System

  4. Back To Top    #4
    pwrstrk's Avatar
    Join Date
    Aug 2012
    Location
    Elverson Pa.
    Posts
    4,758

    Gallons Calculation & First TF-100 Results

    Welcome to TFP !

    If you haven't already take sometime and do some reading in pool school. 😎
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

  5. Back To Top    #5
    Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
    Posts
    15,001

    Re: Gallons Calculation & First TF-100 Results

    Quote Originally Posted by pwrstrk View Post
    Welcome to TFP !
    If you haven't already take sometime and do some reading in pool school. ��
    +1 :good Job: The best place to jump in is the ABC's. Take some time there and the rest will be easier.

    Welcome, and enjoy the forum!
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

Posting Permissions

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