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Thread: Pump Question

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    Join Date
    Jun 2011
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    Frisco, Texas
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    Pump Question

    I am in the process of working with a builder on my pool design. It will be a pool only (no spa), but I am building a grotto water fall. The grotto will be roughly 8 feet wide and 3.5 feet off the water. I am building a free form pool roughly 33' x 20'. The builder is telling me that I will only need 1 variable speed Jandy pump vs. having a separate water feature pump? Does this sound correct? They are telling me I could add an additional pump but it will just cost more money and is not really needed. Should I get the additional water pump or not?
    33'x21' In-ground (23,000 gal) - 8' spa raised 18" with 8 jets | Filtration Jandy DE 60 | Sanitation Aquapure 1400 SWG | Pumps Intelliflo VS+SVRS 3.0HP & Jandy 1.5HP stealth water feature pump | Heating Jandy LRZ400 | Lighting Jandy LED Spa (1)/Pool (2) | Coping Tennessee Crab Orchard & Moss Rock | Finish pebble sheen type (riversand) Tahoe Blue

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    Melt In The Sun's Avatar
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    Oct 2009
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    Re: Pump Question

    Welcome to TFP!
    That's a wide waterfall. How much water are you visualizing going over it? You may need quite a large pump and separate plumbing for it.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
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  3. Back To Top    #3

    Join Date
    Jun 2011
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    Frisco, Texas
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    Re: Pump Question

    The total width will be 8 feet, but I'm thinking after I build up the boulders around it, etc that I will only have about 4 or 5 feet for the waterfall. I'm trying to create a grotto/jump rock that my kids can jump off as well as having some water come off it. Just not sure if I need a separate pump or not.
    33'x21' In-ground (23,000 gal) - 8' spa raised 18" with 8 jets | Filtration Jandy DE 60 | Sanitation Aquapure 1400 SWG | Pumps Intelliflo VS+SVRS 3.0HP & Jandy 1.5HP stealth water feature pump | Heating Jandy LRZ400 | Lighting Jandy LED Spa (1)/Pool (2) | Coping Tennessee Crab Orchard & Moss Rock | Finish pebble sheen type (riversand) Tahoe Blue

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    37,879

    Re: Pump Question

    It very much depends on the width of the waterfall and how you want it to look. Flow rates for waterfalls are in the 5 to 30 GPM per foot of width range, with values around 10-15 GPM/foot being the most common. At 15 GPM/foot, an 8 foot waterfall needs 120 GPM, which will make a separate pump well worth having. But a two foot wide waterfall at 10 GPM/foot, or 20 GPM total, would work just fine on the main pump.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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  5. Back To Top    #5

    Join Date
    Jun 2011
    Location
    Frisco, Texas
    Posts
    70

    Re: Pump Question

    Is it possible to use the water fall pump to also run my polaris cleaner or do I need the separate pump that comes with the cleaner? I've been told my city requires a safety valve for each pump and that cost is $500, so I'm trying to understand my options.
    33'x21' In-ground (23,000 gal) - 8' spa raised 18" with 8 jets | Filtration Jandy DE 60 | Sanitation Aquapure 1400 SWG | Pumps Intelliflo VS+SVRS 3.0HP & Jandy 1.5HP stealth water feature pump | Heating Jandy LRZ400 | Lighting Jandy LED Spa (1)/Pool (2) | Coping Tennessee Crab Orchard & Moss Rock | Finish pebble sheen type (riversand) Tahoe Blue

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