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Thread: Lots of rain after pool closure

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    Lots of rain after pool closure

    This is my first winter with a new pool pool. I had the pool company close the pool for me. They drained the pool and the water level was a good two inches below the return lines. Since I don't have any trees in the backyard, I chose not to cover the pool.

    Over the weekend, we received a substantial amount of rain. The water level is now right at return line. Do I need to drain the pool a few inches or should I just leave it? I live in Canada, so as you can imagine, the winters get extremely cold.

    Thanks in advance for your help.

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    Join Date
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    Re: Lots of rain after pool closure

    Hello,
    I was waiting for someone in the industry to answer this, but I thought at this point I'd give my two cents. I would drain a couple of inches, and keep an eye on it over the winter. It's my understanding that the water is below the return lines and the return lines were probably blown out, so that no water is left pooled in the lines that can freeze. Maybe they put some type of plugs in the return lines after they blew them out (?) to keep water from going back into them, but if they dropped the level below the returns, I'd try to keep it at that level.
    Todd
    --------------
    Pool: 16x36, 16,800 gal., vinyl, sand filter, SWG & AquaCal Heat Pump
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    JasonLion's Avatar
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    Re: Lots of rain after pool closure

    Yes, what tnthudson said. In the early spring, after the freezing weather is over but before you "open" the pool, you can start letting any rain raise the water level. When freezes are still expected it is safer to keep the water line below the returns.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    MikeInTN's Avatar
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    Re: Lots of rain after pool closure

    Jason, just for clarification for the OP - The reason for lowering several inches below the return line is to leave room for ice expansion so that the layer of ice that forms on top of the water doesn't reach and damage the return fittings, correct?
    24' x 52" AGP - approx 13,500 gallons
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    Re: Lots of rain after pool closure

    This is the second time this week I've tried to answer for Jason

    I believe it's to keep the plugs from sheering off from the ice (I'm pretty sure Jason mentioned that somewhere some time ago) However, we'll see what he has to say
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

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    JasonLion's Avatar
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    Re: Lots of rain after pool closure

    There are a couple of reasons for keeping the water below the returns. In Canada, ice can shear off the fittings. That won't happen in milder climates. Another reason is to keep water from getting into the return line. The plug on the return line should keep water from getting in, but the plug doesn't always hold (even thin ice layers can "nudge" the plug out of place if it isn't really solidly in place). If the water level is below the return, you have an extra measure of protection against water getting into the return line.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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