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

Thread: Calculating Gallons

  1. Back To Top    #1

    Join Date
    Jul 2015
    Location
    Sarasota, FL
    Posts
    43

    Calculating Gallons

    Pool is 16'wide by 32'long rectangle. 5.5' deep in the middle sloping to 4.0' at the ends. Think volleyball pool configuration as slope up from middle is even on both ends. What gallonage do you calculate?

    Thanks

    Randy
    15000 gal in-ground rectangular concrete/pebble-tech pool. Hot Springs Prodigy 325 gal spa.

  2. Back To Top    #2

    TFP Guide
    triptyx's Avatar
    Join Date
    Apr 2016
    Location
    Tucson, AZ
    Posts
    1,194

    Re: Calculating Gallons

    Go to Pool Math (the link is above in the blue nav bar), scroll to the bottom, select Rectangular, enter your length and width, and estimate your average depth, and voila, gallonage!

    After that, if you have a recommended test kit, you can carefully test your FC, pour a carefully measured dose of bleach into the pool, then within about 15 minutes test FC again. Put your old FC as "current", your new FC as "target", then play with Gallons until the amount of bleach you poured in comes up and presto - you have an extremely close estimate of your volume.
    8,500gal plaster in-ground with attached spa, two floor drains, one skimmer. Chlorine, City Water.
    Pentair WhisperFlo 1hp Pump, MagnaTek Midcentury EPlus motor, Pentair CleanNClear 200SF Cartridge filter, Purex Triton MiniMax 250 Gas Heater, Pentair SunLite, AutoFill.
    Kreepy Krauly Cruiser, TF-100 with SpeedStir. :D

  3. Back To Top    #3
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Calculating Gallons

    Quote Originally Posted by triptyx View Post
    After that, if you have a recommended test kit, you can carefully test your FC, pour a carefully measured dose of bleach into the pool, then within about 15 minutes test FC again. Put your old FC as "current", your new FC as "target", then play with Gallons until the amount of bleach you poured in comes up and presto - you have an extremely close estimate of your volume.
    I would not call this a one and done. The strength of bleach can vary. Over time if you consistently are missing your targets for all chemicals, then you could adjust the volume.
    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!

  4. Back To Top    #4

    TFP Guide
    triptyx's Avatar
    Join Date
    Apr 2016
    Location
    Tucson, AZ
    Posts
    1,194

    Re: Calculating Gallons

    That's an excellent point Jason, thanks for the clarification!
    8,500gal plaster in-ground with attached spa, two floor drains, one skimmer. Chlorine, City Water.
    Pentair WhisperFlo 1hp Pump, MagnaTek Midcentury EPlus motor, Pentair CleanNClear 200SF Cartridge filter, Purex Triton MiniMax 250 Gas Heater, Pentair SunLite, AutoFill.
    Kreepy Krauly Cruiser, TF-100 with SpeedStir. :D

  5. Back To Top    #5

    Join Date
    Jul 2015
    Location
    Sarasota, FL
    Posts
    43

    Re: Calculating Gallons

    The question is volume. I'd always been thinking 15000 gallons but if you average middle and end depth you get 11000. A big difference.


    15000 gal in-ground rectangular concrete/pebble-tech pool. Hot Springs Prodigy 325 gal spa.

Posting Permissions

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