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Thread: main drain

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    main drain

    Does anyone have an actual bottom drain in your pool? If so does it keep your pool bottom cleaner?
    5,000 gal above ground pool summer escapes pool

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    Mod Squad Bama Rambler's Avatar
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    Re: main drain

    FPM (Frustrated Pool Mom) has a bottom drain in her AGP (Above Ground Pool) and likes it. There are also a few other AGP's around with one. I don't know if it keeps the bottom cleaner but it would at least help in allowing stuff to be swept into it.
    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
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    dmanb2b's Avatar
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    Re: main drain

    I do not have one, but it certainly does help our neighbor's round AGP bottom stay cleaner. As, bama mentioned FPM has one an loves it...the key is to ensure it is properly installed and winterized. To me it's just another hole in the liner I decided to avoid, but many are happy with theirs.
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

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    Re: main drain

    My husband and I purchased a used 15 x 30 above ground pool last year and put in main drains. We did it because our neighbor has one in his pool and it is fantastic at keeping the pool clean... Now he only has a single because at the time that is what was required. When we installed the pool last year we had to put in 2 because of the updated safety code. However the problem I find is that our 3/4 hp hi-flo pump which came with the pool and was also used isn't strong enough to create the suction we need for both drains, so more often than not I would shut them off and just run the skimmer. This year however we are going to purchase a stronger pump which I hope helps to solve the problem, because I found myself vacuuming more than I had hoped last year. But like I said the single main drain in my neighbors pool is fantastic. Initially I figured with 2 main drains it would be that much better, but I just think the pump and filter system being older isn't capable of handling the demand of them.
    Erica

    15'x30'x52" Oval Johhny Weissmuller AGP
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    Mod Squad zea3's Avatar
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    Re: main drain

    Erica, look into a 2 speed pump for your pool. You use the high speed for cleaning and vacuuming and low speed for skimming and general water filtering. You can also look into putting individual valves on each drain and the skimmer which would allow you to turn off flow to 2 items and leave 1 open for cleaning.

    If you get a stronger hp single speed pump your electric bill will go up.
    TFP Moderator
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    dmanb2b's Avatar
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    Re: main drain

    Quote Originally Posted by vvblondyvv
    My husband and I purchased a used 15 x 30 above ground pool last year and put in main drains. We did it because our neighbor has one in his pool and it is fantastic at keeping the pool clean... Now he only has a single because at the time that is what was required. When we installed the pool last year we had to put in 2 because of the updated safety code. However the problem I find is that our 3/4 hp hi-flo pump which came with the pool and was also used isn't strong enough to create the suction we need for both drains, so more often than not I would shut them off and just run the skimmer. This year however we are going to purchase a stronger pump which I hope helps to solve the problem, because I found myself vacuuming more than I had hoped last year. But like I said the single main drain in my neighbors pool is fantastic. Initially I figured with 2 main drains it would be that much better, but I just think the pump and filter system being older isn't capable of handling the demand of them.
    You may likely find that the 3/4hp is more than enough pump, but your filter may be too restrictive if it is undersized, especially if it's DE or in need of cleaning. Putting a larger pump on a AGP is usually not helpful unless you have multiple returns, larger than 1.5 diam plumbing and an oversized filter.
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

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    Re: main drain

    dmanb2b - Well there is only one return... but now that I think about you may be right, it may be the filter and not the pump. Thinking back to the end of the summer, there was a very very slow leak coming from the filter which could have caused a loss of suction because air was getting into the system and I would find myself having to bleed the air out of the pump (where that skimmer basket is) to reprime it. We just assumed it was the pump because it would lose prime, etc. The main time I would notice the problems with suction though was when I was trying to vacuum the pool. I also think the filter had a small crack in one of the little pipes (I don't know what they are called - inside the filter at the bottom) because I would find little bits of sand in the bottom of the pool. As for the filter being dirty the pool was only up and running for August and September and before we installed everything we cleaned the filter out and put in new filter sand.

    As for purchasing the pump I was actually just looking at the two speed ones. We know that the pump and filter that came with the pool are older so were going to just purchase a whole new system. That way we know exactly what we have.
    Erica

    15'x30'x52" Oval Johhny Weissmuller AGP
    Hayward Power-Flo LX 1hp Pump
    Hayward Pro-Series High Rate Sand Filter
    Aluminum Sundeck and Fencing
    Location: South Jersey

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    dmanb2b's Avatar
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    Re: main drain

    Gothcha Erica

    If you are redoing things anyway, certainly look at oversizing the filter. Also would be a good time to hard pipe with rigid PVC, which may eliminate some of the suction side leaks you may have experienced...or it could have been as simple as making sure the vacum hose is completely full of water and the vacum plate is properly seated on the skimmer

    PS...those little pipes inside the filter are called laterals
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

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    20GT's Avatar
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    Re: main drain

    Hi where can i get a main drain for my AG intex?
    I really want to pipe one in
    5,593 gallons of water at 80% capacity <Orlando, Florida>
    AG Intex Round Metal pole Swimming Pool - 16 Feet x 48 Inches (Intex A 16 X 48 F B02 11 01)
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    20GT's Avatar
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    Re: main drain

    Hi Guys.
    i found a bottom drain.
    http://www.pondmerchant.com/home/pon...uum_drain.html
    Is this like the one mentioned in this post thread?
    Any ideas if this will work in my vinal pool? i plan on hooking it up to the vac inlet.
    i'm also going to put a elbow on my outlet to create a whirlpool to bring the trash to the middle pool drain. i might only use this a couple days a week to cut down on vacuuming.
    what do you think???
    5,593 gallons of water at 80% capacity <Orlando, Florida>
    AG Intex Round Metal pole Swimming Pool - 16 Feet x 48 Inches (Intex A 16 X 48 F B02 11 01)
    Sand, SandPro 75 – 3/4 HP, 45GPM/2700GPH flow rate. GAM-4511 (Just days old 7/5/11)
    Crystal Clear Still

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    dmanb2b's Avatar
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    Re: main drain

    no...that's a pond drain. The one mentioned above is plumbed from under the pool.
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

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    20GT's Avatar
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    Re: main drain

    Quote Originally Posted by dmanb2b
    no...that's a pond drain. The one mentioned above is plumbed from under the pool.
    ah thanks. they must keep their pool up year round to go to all that trouble.

    isn't a pond just a pool of water. I really have no interest in puncturing my intex pool to add a bottom drain.

    I was thinking of putting this inside the pool connected to my vac inlet when were not swimming. having a elbow on the pool outlet to create a whirl pool that would bring all the sand and junk to the middle which would be picked up by the middle main drain.

    what do you think.
    5,593 gallons of water at 80% capacity <Orlando, Florida>
    AG Intex Round Metal pole Swimming Pool - 16 Feet x 48 Inches (Intex A 16 X 48 F B02 11 01)
    Sand, SandPro 75 – 3/4 HP, 45GPM/2700GPH flow rate. GAM-4511 (Just days old 7/5/11)
    Crystal Clear Still

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    mcoonan's Avatar
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    Re: main drain

    Quote Originally Posted by 20GT
    Quote Originally Posted by dmanb2b
    no...that's a pond drain. The one mentioned above is plumbed from under the pool.
    ah thanks. they must keep their pool up year round to go to all that trouble.

    isn't a pond just a pool of water. I really have no interest in puncturing my intex pool to add a bottom drain.

    I was thinking of putting this inside the pool connected to my vac inlet when were not swimming. having a elbow on the pool outlet to create a whirl pool that would bring all the sand and junk to the middle which would be picked up by the middle main drain.

    what do you think.
    I think that I am going to order one!
    Thanks for finding it!
    Intex Ultra 18' x 52" AG 6,981 Gal.
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    20GT's Avatar
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    Re: main drain

    your welcome tell me how it works out for you.
    I'd get one right now but have to get slide valves and adapters and a vac hose adapter hose , for my pump first.
    5,593 gallons of water at 80% capacity <Orlando, Florida>
    AG Intex Round Metal pole Swimming Pool - 16 Feet x 48 Inches (Intex A 16 X 48 F B02 11 01)
    Sand, SandPro 75 – 3/4 HP, 45GPM/2700GPH flow rate. GAM-4511 (Just days old 7/5/11)
    Crystal Clear Still

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