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Thread: Selecting pump and filter

  1. Back To Top    #1

    Join Date
    Jun 2015
    Cuernavaca, Morelos, Mexico

    Selecting pump and filter

    What pump and filter size it is necesary for a 21,500 gallons in ground pool with 45 feet of 1 1/2" return line and 25 feet of 1 1/2" suction line? Room equipment is is located 9 feet below pool water level at the maximun pool depth of 6 feet.
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    My pool is an in ground pool, kidney shape, made out of plaster/pebble tile cover, remodel a year ago. Its capacity is around the 21,500 gallons; it is located in a warm city. The local temperatures are pretty stable all year round, ranging from the sixties to the lower nineties during the summer. The pool is being used mainly for weekends, for just a few people.

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Selecting pump and filter

    Welcome to TFP!!!

    Not 100% sure about the pump sizing given the "depth" of the pool equipment.
    But likely a 1HP pump would be sufficient ... not sure if a 2-speed of VS pump would make sense given the required 9' rise.

    What kind of filter are you looking for? Pool School - Pool Filter Comparison
    For minimum filter sizes I would suggest:
    325 sqft cartridge or
    27" diameter sand or
    60 sqft DE
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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  3. Back To Top    #3
    mas985's Avatar
    Join Date
    May 2007
    Pleasanton, CA

    Re: Selecting pump and filter

    The depth of the pool equipment really doesn't have an impact on the pump performance in this case. If anything it makes priming easier so you could use an AG pump if you wanted to. However, like an AG pool, you need isolation valves so you can open the pump basket.
    Hydraulics 101; Pump Ed 101; Pump and Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, 1/2 HP 2sp pump, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater, ThePoolCleaner

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