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Thread: Planning my AGP Install-Bottom Main Return?

  1. #1
    Junior Member
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    Jun 2012
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    4

    Planning my AGP Install-Bottom Main Return?

    Trying to plan my used agp install ahead a little by asking if anyone here would recommend a bottom main drain. A friend of mine highly recommends it, said it helps a bunch with chemical distribution and helps tremendously with keeping the bottom clean. I like both of those benefits but being devils advocate, I see another hole or two in the liner=greater chance for a leak.

    BTW, this is an 18'x33' oval, not sure if that makes a difference.

    Thoughts?
    20,800gals 18x37, vinyl, 1hp Hayward super pump, sand filter.

  2. #2
    Administrator JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    Re: Planning my AGP Install-Bottom Main Return?

    There are pros and cons. A bottom drain on an above ground pool is difficult to winterize properly, which may or may not be an issue for you. It is also another place where a leak could develop. On the other hand it does improve circulation and give you somewhere to brush debris to.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    TFP Admin. Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. #3
    Senior Member
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    Jun 2010
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    San Antonio
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    422

    Re: Planning my AGP Install-Bottom Main Return?

    I would love to have a bottom drain. I am in South Texas and have no freeze concerns. However, I do have oak pollen that sinks to the bottom and is really hard for me to get out. I have difficulty vacuuming (a skill I have not mastered) and therefore being able to brush fine stuff to a bottom drain would be great. As it is I just brush and stir stuff up and try to vacuum. So, if I were doing it again, I would add the bottom drain.
    Larry in Texas

    Above ground 7,700 gallons, 19 inch sand filter ( 2 sq. ft.), with a WaterWay Hi-Flo Pump with an A.O. Smith 1 hp SF 1.0 motor.

  4. #4
    Junior Member
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    Jun 2012
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    Re: Planning my AGP Install-Bottom Main Return?

    i am in sw pennsylvania so winters are cold. what kind of winterization issues will i encounter?
    20,800gals 18x37, vinyl, 1hp Hayward super pump, sand filter.

  5. #5
    Member
    Join Date
    Jul 2011
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    67

    Re: Planning my AGP Install-Bottom Main Return?

    I have a 18x33 pool without a main drain and have zero problems. I see no benefits only potential problems.

  6. #6
    Senior Member Jamison04's Avatar
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    Jun 2011
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    Tecumseh, OK
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    315

    Re: Planning my AGP Install-Bottom Main Return?

    Will you be having a deep end in your pool? I can see it being good to help circulate the water down in the deep area plus all the dirt and debris will want to naturally gravitate toward that area anyways and it would definitely be easy to suck the junk up through it with a few sweeps of a broom. If no deep end than I really can't see a benefit other than it would still be nice to suck the debris up.
    18' Summer Escapes ProSeries - 7600gal - Hayward 1hp pump w/18" sand filter - AquaTrol SWG -

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