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Thread: draining the pool

  1. Back To Top    #1

    Join Date
    Jun 2013
    Irmo, SC

    draining the pool

    Our CYA is 80, and I'd like to do a partial drain to bring it down. The pool calculator tells me I'll need to drain half of it to get it to 40. Can anyone tell me the steps I should follow to do this partial drain? I've tried to research it and am getting very confused by all the different information. Our filter has a backwash setting. Do we use that? A sump pump? Do we drain it into the sewer or into the ground? We have had tons of rain lately. Does that matter? A step-by-step explanation would be so great!
    12500; sand; IG; vinyl; Tf-100 test kit

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    In the Industry
    poolsupplysales's Avatar
    Join Date
    Jan 2012
    Tulare, CA

    Re: draining the pool

    If you live in town you will need to contact them as to regulations, instructions and sometimes permits for draining a pool. Also a submersible pump is always the safest bet.

  3. Back To Top    #3

    Re: draining the pool

    Just finished draining ours 60% for the same problem. We used a sump pump and let it drain into a ditch by the side of our house. We are in the country though so we have no permits/regulations or anything to worry with. It took about 30 minutes to drain and we are refilling now!
    [center:24l4i2yw]3 year old 30' round/54" wall, 23,000 gallon Tahitian AG with a vinyl liner. 1.5 HP pump with sand filter system.[/center:24l4i2yw]

  4. Back To Top    #4

    Join Date
    May 2013

    Re: draining the pool

    You can certainly do a backwash if you want. I believe you can also just open it up to "waste", if that's an option. If you have a sewer close by, go ahead and drain into it. Our property sits on a hill, with acres of woods behind us, so we just drain down the hill into the woods. Since you live on the east coast you probably have had tons of rain and don't need to water your grass.

    I have never heard of getting a permit to drain a pool around here. Sounds complicated, and besides, isn't that part of the water and sewage charge?
    10,000 gallon inground, gunite, 500lb sand filter. Brand new to this pool thing.

  5. Back To Top    #5
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: draining the pool

    Draining that much water through the backwash setting is not really a good idea as any debris in the water will then be stuck on the wrong side of the filter. If you have a waste setting and can isolate the suction to only the floor, then you could use that method. Otherwise, you need a submersible pump.

    With a liner, make sure you leave at least a foot of water in the shallow end.
    Jason, TFP Moderator
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  6. Back To Top    #6
    Isaac-1's Avatar
    Join Date
    May 2010
    SW Louisiana

    Re: draining the pool

    With a lot of rain and if you have a liner IG pool, then don't drain too much water at once, you probably want to do 2 25-30% drains instead of 1 50%. As was mentioned above leave at least a foot of water over your shallow end to keep wrinkles from forming in a liner pool.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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  7. Back To Top    #7
    techguy's Avatar
    Join Date
    Jul 2010
    Antelope, CA

    Re: draining the pool

    I rented a "trash pump" at HomeDepot in my town for about $40 for the minimum 4 hours and had the pool pumped, cleaned up and returned in that time. I pumped to the gutter in front of my house and into the sewer. The pump comes with as much hose as you need. It just plugged in.
    -- Guy --
    10K gallons in 21' Round 52 inch wall Aqualeader AG, Hayward Power Flow LX 1.5 HP pump motor, Hayward Perflex EC50AC DE filter w/Cellulose, Wide mouth skimmer, 2013 new Diver Dan (craigslist) to replace the faded old Hayward AquaBug. TF-100

  8. Back To Top    #8
    CUTiger78's Avatar
    Join Date
    May 2009

    Re: draining the pool

    Put a garden hose in it and siphon out as much as you want (or can). If you've on a well, you might want to try the water replacement over a couple of weeks. Drain some out, refill for an hour or so each day.

    That's basically what I do and what's keeping my CYA low. I've got a leak and need to refill about an hour a day with the garden hose.

    Good luck!
    36K gallon 42X22 gunite/plaster kidney-shaped IG;
    1 hp Hayward Super Pump (new in 2012);
    Hayward S244T sand filter w/ Zeosand (both new in 2009);
    175K BTU LAARS Lite2 LG natural gas heater; Polaris 380;
    TF-100 test kit.

  9. Back To Top    #9

    Join Date
    Jul 2013
    Weslaco, TX

    Re: draining the pool

    I am currently in the process of draining water to bring down CYA and CH. I bought a 1/3 hp submersible pump from Amazon. I did some pumping into the sewer clean out. Now I have a sprinkler attached to the garden hose. I set the pump at one end of the pool and refill at the other end of the pool. I only drain about 6 inches at a time so the skimmers can run every day. I'm pumping over 100 feet with a garden hose....
    Built in Summer 2011, 16,875 gal, 14'6" x 34' irregular, 3'6" to 7' depth, gunite/plaster inground (blue quartz)
    Two-tone kook deck, 1 handrail, 7' x 10' beach landing, 2 IntelliBrites LED
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    1.5 hp WhisperFlo pump, Pentair FNS Plus 48 sq ft vertical grid filter, Intermatic timer (T100 series), Performax 960 chlorinator tube

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