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Thread: Small pool with salt chlorine generator

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    Join Date
    Jun 2010
    Austin, TX

    Small pool with salt chlorine generator

    This is a very similar question to the one in "Oversized Salt Water Generator" but I wanted to check and see if the advise in that thread holds up when we are talking one third the amount of water.

    I'm getting a small exercise pool installed. I guess some might call it a spool. It is 8 x 17 x 5. Once you remove the volume taken by the steps and bench it is only about 3900 gallons.

    I'm currently planning on getting a salt chlorine generator from Hayward. The smallest cell they have is designed for pools up to 15000 gallons. I've read a couple of posts that say once the cell size is 3 times greater than the number of gallons you will run into trouble. Is this something I should be concerned about? Will I be able to get by running it at a very low percentage? I will have a P4 controller that should allow me to set the "on" time in 1% increments.

    The "Oversized Salt Generator" thread seems to indicate this would be okay, but that thread is talking about a 12,000 gallon pool, where my pool is 1/3rd that size.

    3900 Gallon (18 x 8.5 x 5) Partially In Ground Fiberglass Pool -- 2" Schedule 40 PVC -- Hayward P4 Controller -- Goldline Aqua Rite Turbo Cell Salt Chlorinator -- Hayward 2 Speed Max Flo II 1 HP Pump -- Hayward SwimClear 225 sqft Cartridge Filter -- Hayward 250K BTU Natural Gas Heater -- Endless Pool Fastlane Swim Machine -- Cover Pools Manual Track & Reel Security Cover -- TF-100 Testkit

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    susa's Avatar
    Join Date
    Oct 2010
    Deep South

    Re: Small pool with salt chlorine generator

    it will work just fine, have installed several 3x and 4x size(d) units

  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Small pool with salt chlorine generator

    The larger the SWG is relative to the size of the pool, the lower the percentage you need to run it on, the larger a 1% change in output is. Nothing goes wrong really, you just end up being forced to run the cell for longer than you would otherwise need to if you had finer control over the run time. As the cell gets larger that extra run time from rounding up the percentage to the next higher integer starts to eat into your savings from buying a larger cell. This is not much of a problem at 3x, starts to be noticeable at 4x, and only gets to be a serious issue somewhere larger than that.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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