Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: Closing Water Level With Mesh Cover

  1. Back To Top    #1

    Join Date
    Jul 2011
    Location
    St. Paul, MN
    Posts
    244

    Closing Water Level With Mesh Cover

    Yesterday I had my pool professionally closed and the mesh winter cover installed. The guy who did the closing recommends that I raise my water level back up to 3-4 inches below my skimmers. The reasoning being to prevent the mesh cover from stretching too much under the weight of all of the snow we get here in MN. Currently the water level is just below the returns.

    My concern about adding water to the pool is that my fill water has high TA (around 225ppm). Currently, my TA is 80 ppm which is the "sweet spot" that keeps my pH very stable. In the past I have noticed that even when I add just an inch or two of fill water and my TA goes up to about 100, my pH climbs above 7.8. So, I am worried that by adding a significant amount of fill water, my pH will be high all winter.

    What's worse - high pH all winter, or the possibility of damaging my mesh cover? I'm thinking the high pH isn't too big a deal since my calcium hardness is only about 200.

    Test results before closing:
    FC - 15
    CC - 0
    pH - 7.5
    TA - 80
    CH - 200
    CYA - 40
    20'x40' Oval 27,000 gallon Vinyl IG, Coverstar Auto Cover
    Hayward MaxFlo SP2303VSP, Sta-Rite PLD50 30 sq. ft. DE filter
    Rheem 266,000 btu natural gas heater
    Dolphin Nautilus Plus with Clever Clean
    TF-100 testkit w/ Speed Stir

  2. Back To Top    #2
    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    Location
    SW Indiana
    Posts
    9,086

    Re: Closing Water Level With Mesh Cover

    I think my cover said 15" below the cover.

    If you think you'll have enough rain to raise it before the snow hits, I wouldn't be too worried.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

  3. Back To Top    #3

    Join Date
    Dec 2009
    Location
    Central Massachusetts
    Posts
    2,690

    Re: Closing Water Level With Mesh Cover

    As long as the water level is no lower than 15 inches or so when the snow falls, its ok. It's lower than that now, but like John said, it may rain enough by then to raise the water on it's own.

    My larger question is why they lowered the water that far in the first place? Yes, i know why they did, but those returns can be blown wet with no issue.
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

  4. Back To Top    #4

    Join Date
    Jul 2011
    Location
    St. Paul, MN
    Posts
    244

    Re: Closing Water Level With Mesh Cover

    Thanks for the replies.

    After posting, I found the loop-loc website and they also recommend the water level be 15-18" below the pool deck.

    I also found this picture on their website, and it made me feel better about having a bit of snow on the cover

    [attachment=0:25plmvlz]pool-covers-looploc-bubbles.jpg[/attachment:25plmvlz]

    As far as why they drained the pool below the returns, I understand that it is not necessary, but I believe it is a pretty common practice?
    Attached Images Attached Images
    20'x40' Oval 27,000 gallon Vinyl IG, Coverstar Auto Cover
    Hayward MaxFlo SP2303VSP, Sta-Rite PLD50 30 sq. ft. DE filter
    Rheem 266,000 btu natural gas heater
    Dolphin Nautilus Plus with Clever Clean
    TF-100 testkit w/ Speed Stir

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •