Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: pool volume question

  1. Back To Top    #1

    Join Date
    Mar 2015
    Location
    Gilbert, AZ
    Posts
    6

    pool volume question

    I drained and acid washed my pebble sheen salt water pool this past weekend. I was told that it was approximately 15k gallons. It is a free form play pool but the actual dimensions are slightly larger than the plans show (about 2' longer and 6" deeper). It is about 37' long with 3.5 /5.5 /4.5 depths and average about 14' wide with a Baja shelf and step.

    I added 8 bags of salt yesterday (was using liquid chlorine for a few days prior) and measured 400 ppm before adding the salt. I tested with 3 different methods this morning- my salt kit (2000 ppm), a test strip about (2000 ppm) and my T-cell 15 (2100 ppm). The pool math calculator states I would have added 213 pounds of salt to get to this level, not the 320 pounds I actually added.

    If I keep adding salt to get to 3,200 ppm, I would have added enough salt for a 17k pool. Is this an accurate way to determine the actual volume of my pool going forward or am I missing something? Thanks.

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

    Re: pool volume question

    Well, given that all those testing methods are +/- 200ppm, there is a chance they are all erring on the same side. But, that might be a decent estimate.

    Just try using 17k in PoolMath and see if that helps consistently hit your targets.
    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
    Mod Squad JVTrain's Avatar
    Join Date
    Feb 2014
    Location
    Central Minnesota
    Posts
    5,079

    Re: pool volume question

    Go with what your T-cell says. Keep your cell happy so that it will run.

    I would brush the entire pool again and give it another day, then see where your cell and testing is at, unless you have brushed several times already and have been circulating 24/7 since adding. Better to have too little than to have added too much. Keep creeping up on it and like Jason says, assume 17K based on your results so far for future additions.
    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

  4. Back To Top    #4

    Join Date
    Mar 2015
    Location
    Gilbert, AZ
    Posts
    6

    Re: pool volume question

    Thanks for the input!
    Mike- 17k IG pebblesheen pool, Hayward ProLogic Ps4 w/ T-15 SWG, Hayward 1.5HP 2-speed pump, Hayward 4025 cartridge filter,
    Heliocol solar panels, A&A IG pop-up cleaning system.

Posting Permissions

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