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Thread: Two bottom drains

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    Marty D's Avatar
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    Two bottom drains

    Do you need the two bottom drains ? My pool service guy said they are not needed. Inground 30x60. The pipes run up to the pump but they are not connected. Pool has 3 skimmers and 8 jets.

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    wjr75's Avatar
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    Re: Two bottom drains

    They help keep the junk on the bottom of my pool out of there. I would be concerned about any water that is in the pipes not getting circulated. Good spot for algae to grow.
    Inground 22k gallon gunite 15x31 main pool, 15x7 wading pool/sunning deck, hot tub/with overflow (9' octagon with limestone top) & slide NSWG, Aqua Blue Pebble Sheen
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    Mod Squad pooldv's Avatar
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    Re: Two bottom drains

    Just fyi, it isn't two bottom drains it is one bottom drain with a tee to two grates to prevent suction entrapment of kids against the drain. I like my bottom drain, when I brush my pool I turn all suction to the drain and brush all the dust and junk to the drain. I don't own a vacuum and my suction side cleaner annoyed me one time too many and got tossed in the corner months ago. I have kept the pool spotless, through spring, with a net, a brush and the bottom drain. And we have a LOT of trees. Pics in build thread, link in sig.
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Marty D's Avatar
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    Re: Two bottom drains

    I been asking the pool guy to hook them up. I will ask again. If he doesnt. I will get someone else. Thanks. Marty

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    Re: Two bottom drains

    Normally they are tied into the skimmer box and there is an adjustment that allows you to increase or decrease the bottom drain suction. If pipes are not tied in that way, tee in near pump and put a valve in to allow you to adjust skimmer vs. bottom drain flow. If you have two separate pipes, you will need to tee them together before the valve or else suction entrapment could result and someone could drown.
    18,000 gunite pool/spa combo. Pebble tec, iaqualink rs8, cl580 filter, aquapure 1400, 400k btu lx heater, 10 solar panels, jandy 1hp, 1 1/2hp, and 2hp stealth pumps for circ, spa, waterfall

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    mas985's Avatar
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    Re: Two bottom drains

    MDs are unnecessary. You can read about them here: http://www.poolinspections.com/manua...out-drains.pdf

    They may have been closed off because of a leak, which is not uncommon, or because they got clogged and cannot be cleared, which is also not uncommon.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Marty D's Avatar
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    Re: Two bottom drains

    The last owner walked away from house ( bank sale ) he took or sold all the pool equipment and took a saw and just cut all the pipes at pump. I paid $600 to reconnect all the pipes when I bought all new equipment. The pool guy just doesnt like bottom drains. He said they are useless. I want them conected.
    Inground 30x60 vinyl W/2 French ends w/sitting spa. Built 2007. 2016 pentair electric 140 heat pump. Pentair VS-SVRS pump. System 3 modular filter SM series S7m120

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    Mod Squad pooldv's Avatar
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    Re: Two bottom drains

    I like my bottom drains. I put all suction to the drain when I brush my pool and brush all the debris to the drain. No vacuum and no pool cleaner. Life is good.
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    mas985's Avatar
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    Re: Two bottom drains

    I have a cleaner for that and it doesn't require any brushing and it picks up leaves too.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    mas985's Avatar
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    Re: Two bottom drains

    Quote Originally Posted by Marty D View Post
    The last owner walked away from house ( bank sale ) he took or sold all the pool equipment and took a saw and just cut all the pipes at pump. I paid $600 to reconnect all the pipes when I bought all new equipment. The pool guy just doesnt like bottom drains. He said they are useless. I want them conected.
    The reason that the pool guy may not want to install the MDs is because it can trigger VGBA requirements. This requires dual MDs with VGBA compliant covers or a SVRS system on the pump. Are you pulling permits for the work?
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Mod Squad pooldv's Avatar
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    Re: Two bottom drains

    Yeah, my pressure side cleaner annoyed me one time too many so it got tossed. It was good for 3+ years. Maybe someday I'll get another.
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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