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Thread: Draining water while opening pool

  1. Back To Top    #1

    Join Date
    Jul 2009
    Upstate New York

    Draining water while opening pool

    The water level is too high and I'm just about to super chlorinate. Do I backwash first to my desired level or do I superchlorinate first? My main concern is sending all that dirt and algae through the other end of the sand filter.
    20,000 gal oval IG, vinyl liner. 1 HP Pentair Superflo pump. Intellichlor ic20 SWCG with easy touch, Sand Dollar SD80 sand filter, Taylor K-2006 test kit.

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Draining water while opening pool

    I'd drain first if my only reason was to lower the water level. But, if there is stuff in the bottom that I needed to vacuum out, I'd use the waste function of the multiport and vacuum as much as I could out while lowering the level. The 'two birds one stone' thing...
    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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  3. Back To Top    #3
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    East Texas

    Re: Draining water while opening pool

    Super chlorinate = shock.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
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  4. Back To Top    #4

    Join Date
    Apr 2009
    Burlington, ON, Canada

    Re: Draining water while opening pool

    +1 on what Bama Rambler said. I vacuum on waste if I have to lower the water level....
    16x28 Roman, 55000 litres, salt water, Zodiac Duoclear 130 (mineral cartridge removed!!!), inground, vinyl liner
    Hayward Tri-star VS900 (1.85 HP) pump, Hayward C3030 cartridge filter
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