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Thread: The evil Ozonator

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    The evil Ozonator

    I have an UltraPure Ozone Generator installed on my pool, but it has recently quit functioning, and I am debating on what to do about that. We have just started swimming again, and I am already noticing an increased chlorine usage when compared to last year (of course I didn't track chlorine usage last year so I have no firm data on this). But it has made me curious. SO I thought I would pose a few questions here:

    1. Is anyone using an ozonator combined with manual dosing of chlorine? If so, I'd love to hear about your experience and setup (FC Level Maintained, CYA level, etc).

    2. I know every pool is different, but are there any statistics out there on average chlorine usage for manualy dosed pools at various CYA levels?

    3. My unit was/is a UV unit and probably just needs new bulbs, but I was evaluating my options and it appears the CD units are better at generating ozone, but don't last as long as the UV units, does anybody have any data/experience with the differenc between the units.

    4. I know the ozone genrator can work well in higher bather load pools, but I'm curious on ding a cost analysis and seeing if the reduced chlorine usage offsets the cost.

    5. Is anyone using an Ozonator with a SWG?


    18K Gallon In Ground Gunite Pool, Quartz/Plaster Finish, 8' Spa with Spillover, 1 Grotto/Waterfall, Hayward/Goldline PS8 controller, 1.5 HP Two Speed Pump, 1HP Booster Pump for Grotto/Waterfall, Cartridge Filter,400K BTU Nat Gas Heater, Ozonator,3 Multi-Color LED Lights (Spa, Grotto, Pool).

    Ozonator is not functioing, evaluating my options, either fix it or get a new one or drop it completely.

  2. Back To Top    #2
    dmanb2b's Avatar
    Join Date
    Apr 2009

    Re: The evil Ozonator

    drop it and just go with an adequately sized's all you need
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

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

    Re: The evil Ozonator

    Ozone isn't of much use on an outdoor residential pool. Either manual chlorine additions or a SWG does just fine. You would need to save a lot of chlorine before the ozone will pay for it's self. Various reports show ozone increasing chlorine use sometimes and saving chlorine other times, but even the times when it saves chlorine don't save enough to make it worth while in an outdoor residential pool.

    With CYA at 50, a typical pool will lose about 50% of it's chlorine to sunlight each day. For most pools that translates into about 2 ppm of chlorine. However this varies quite a bit depending on the amount of sunlight that shines directly on the pool. I have seen anywhere from 0.25 to 6 ppm per day across a range of pools. Both of those extremes are rather rare, with most pools in the 1 to 3 ppm range.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  4. Back To Top    #4

    Join Date
    Feb 2008
    Flower Mound, TX

    Re: The evil Ozonator

    I agree with dmanb2b. Now, if this was an indoor pool, the case could be made for keeping the ozonator up and running since it really helps with the breakdown of combined chloramines that are problematic in indoor pool environments. But if your pool is outside, the good old sun provides all the UV light that you could possibly want and it does so for free.
    10K gallon IG gunite with waterfall; Pentair CC320P filter; WhisperFlo 2 HP pump
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    "It depends."- JohnT

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