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Thread: Liquidator for my pool?

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    Join Date
    May 2011
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    Va Beach Va.
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    Liquidator for my pool?

    Thinking about adding a Liquidator. I have a 27,000 gal. pool that is in total direct sunlight maybe 8-9 hours a day, in the summer. I run the pump 8 hours a day minimum. Do I need the 4 or 8 gallon version? Also, how much liquid chlorine does each hold, per fill? Any idea how often it will have to be refilled?

    Right now I'm buying the 3 (1.4 gal) jug packs of bleach from Costco, but the pool store down the street sells 2-1/2 gal jugs of the "good stuff" , at a slightly lower cost, with the added advantage of reusable/returnable containers. We're talking maybe a .20 cents difference per gallon cost, once the percentage of chlorine is factored in.

    The big jugs would be a hassle to store and use on a daily basis, but they might be a better option with the Liquidator.

    In regards to the pump running schedule, right now I have it setup where as an outside temperature control overrides the pump time clock if the ambient temps are above 80 degrees. I set this up to run the pump longer when we get one of those heat wave spells. Is this going to screw me up trying to maintain FC with the Liquidator ? I'm thinking so.

    Thanks
    John K.
    27,000 gal. vinyl IG, w/ sand filter and 3/4 HP pump

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    Mod Squad Bama Rambler's Avatar
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    Re: Liquidator for my pool?

    As much as I love them, with your sized pool I wouldn't recommend the LQ (liquidator). I dont recommend them for anything larger than about 20,000 gallons. If that weren't enough, the fact that you vary run time on temp precludes the use of the LQ. You would be constantly adjusting the output and the FC would still swing.

    You are a prime candidate for an injection pump. You can set it up to pump chlorine into your pool during your pumps normal run time and it won't change even if the main pump runs longer. There's some pretty good discussions on peristaltic pumps here.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Va Beach Va.
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    Re: Liquidator for my pool?

    Thanks, I 'll check them out.
    27,000 gal. vinyl IG, w/ sand filter and 3/4 HP pump

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    Join Date
    May 2010
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    Red Bud, IL
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    Re: Liquidator for my pool?

    Check out the Polaris Watermatic system. I have one and it is great.
    21K 30ft Radiant Metric Pool with Pentair EasyTouch 4 Automation, Pentair Screen Logic Interface, Pentair Intellichlor SWG, Pentair Intelliflo Pump with FloVis Flow Meter, Pentair Triton TR-100 Sand Filter, Pentair GloBrite LED Lighting & Dirt Devil Robotic Cleaner

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    Re: Liquidator for my pool?

    The Polaris Watermatic is drastically more expensive than a Liquidator, not comparable at all. It is also an ORP based controller, which I do not recommend for residential use.
    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

  6. Back To Top    #6

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    Va Beach Va.
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    Re: Liquidator for my pool?

    In regards to the peristaltic pump setup, what do I need to know to size the pump? I have extra 24 hour time clocks that I could hook up to control just the peristaltic. I'm an ex HVAC/R tech, with lots of spare parts.

    I changed my pump timer so that it now comes on from 10am to 4pm, and then 8pm to midnight. I did this so that I can manually add bleach right at sunset, and have some run time to circulate it.

    My thinking is if the peristaltic pump is on a separate timer, it could energize at 8pm, and flow fully (with a shorter run cycle) until the daily needed amount of bleach is injected into the system (hopefully in less than 4 hours). Automatically doing what I would do anyway, every night.

    Wouldn't this be better then a drip drip method using the main pump timer? I think it would be better on the pump. Plus the bleach would only be added after sundown.

    Of course I just started the BBB method this season, so have no idea what my liquid chlorine use will be. Can say the pool will be used very lightly, probably mostly by the frogs and ducks from the nearby lake. (and yes I did get a Frog Log this year, hope it works!)
    27,000 gal. vinyl IG, w/ sand filter and 3/4 HP pump

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    Mod Squad Bama Rambler's Avatar
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    Re: Liquidator for my pool?

    You need to figure how much bleach you're using each day. I manually dosed mine for a few weeks to learn how much I used each day. Once you know that, you can figure how fast you want to inject that much and buy a pump that will do about twice that rate.

    It really doesn't matter to the pump whether you run the pump at a slow rate or wide open. It'll be fine either way.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    May 2011
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    Va Beach Va.
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    Re: Liquidator for my pool?

    That makes sense. I'll give it til the middle of June, the summer heat will be full on by then.
    27,000 gal. vinyl IG, w/ sand filter and 3/4 HP pump

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