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Thread: Will Liquidator Work for My Application?

  1. Back To Top    #1

    Will Liquidator Work for My Application?

    I am always looking to simplify and automate and the LQ seems like a good step in that direction. But I am not sure if it will work well for us given our equipment. Here are the facts for our pool:

    12-year old pool
    Pebble Tec
    15K gallons
    Phoenix area
    Purex Clean and Pure Cartridge Filter 520
    A&A QuikPure Ozonator 25K
    A&A In-Floor Cleaning System
    2" plumbing
    No Heater
    AO Smith 2-Speed Motor: .33 or 2.0 HP; 1725 or 3450 RPMs
    Winter (Dec - Feb) - pump on low only for 6 hours
    Shoulder (Mar - Apr; Nov) pump on low for 12 hours
    Summer (May - Oct) pump on low for 22 hours and high for 2 hours
    Sanitation: Ozone + trichlor pucks dropped into in-deck chlorinator; 1 puck every 2 or 3 days in summer seems to work; average of 1 puck per week for the rest of the year

    To deal with CYA creep from the trichlor we have been doing a complete drain and refill every 2 years. I own a good pump and we have a desert wash right beside our house, so this is a pretty simple operation. Extra cost on the water bill is about $60 to do the refill. I figure we use about 120 pucks in a year and the pucks cost about $1.25 each. So chlorine costs about $150 year. The total annual cost for this system of trichlor and every other year drain/refill is about $180 ($120 for chlorine + $30 annual cost allocation for drain/refill). This seems pretty cheap and I am tempted to just stick with it.

    The only reason to consider the LQ is to keep the water in the pool for more years and to eliminate the need to keep track of the trichlor pucks every couple of days in summer. Also, we usually leave Phoenix and travel with our fifth-wheel during August-October. We pay our friends kids $20/week to come drop in 3 or 4 pucks, test the pH, and add acid as needed. If we got the LQ dialed in for summer use, then we might only have the kids come by every two weeks to refill the LQ and check the water balance.

    Questions on the LQ:

    Will it work with the low speed setting on our pump motor?

    I read of some people having a hard time getting the pressure draw they need.

    Will it be too much work to get it set right given the three seasonal settings of our pump motor?

    We have never experimented with running the pump on low setting for 24 hours in the summer, but that would simplify things if the pool still stayed clean with no high speed operation.

    Is it even worth messing around with this given that our current system of ozone/thrichlor + drain/refill is cheap and has worked for 12 years?

  2. Back To Top    #2

    Join Date
    Sep 2011
    Plant City, Florida

    Re: Will Liquidator Work for My Application?

    I have a vacation home in west central Fla, and my dad comes over once every two weeks to refill my LQ system. It does keep up as long as I keep it set at 6 gph, use 12% bleach, and run the pump 7 hours a day. Over the two week period we use about 6 gallons of bleach. Any less than that and it does start turning green.

  3. Back To Top    #3
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Will Liquidator Work for My Application?

    It's hard to say if it'll work. Does the AA cleaner run all the time? Those usually require a lot of pressure and thereby reduce the suction pressure which adversely affects the LQ.

    If you could actually get a suction pressure reading when the pump's on low it'd help determine if it may work. You could always plumb a restriction into the suction line and create some artificial suction head.
    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

  4. Back To Top    #4

    Re: Will Liquidator Work for My Application?

    I replaced the original pressure gauge a couple of years ago, so I am fairly confident that the pressure gauge is giving me good readings. At low speed, the gauge shows no pressure. The in-floor heads in the zones further away from the equipment only pop up about 2/3 of their full potential. The heads in the closer zones pop up fully on low speed. On high speed, the pressure reading centers around 20 psi.

    So long as the motor is running at either low or high speed, we leave the A&A in-floor system running. The plumbing has a Jandy valve between the filter and in-floor zone module that allows for the diversion of the water flow away from the in-floor, but we have always returned the water to the pool through the in-floor system.

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