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Thread: How long to run Stenner pump?

  1. Back To Top    #1

    Join Date
    Mar 2013
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    CT
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    How long to run Stenner pump?

    For those of you w fixed rate Stenner pumps, how do you go about calculating how long the pump should run for?

    I am in the process of securing everything I need to set up my Stenner system for this season. I just bought my barrel

    http://www.uline.com/Product/Detail/...ed-Top-Natural

    and I'll be grabbing this pump shortly.

    http://www.lockewell.com/index.php?m...roducts_id=145

    The pump will be on separate digital timer and I'm wondering how I would go about figuring out how long the timer should stay on for? I would normally shoot for a FC reading of around 8/9 when I was manually adding bleach once a day. My pool gets FULL sun from sun up to sun down all day long. I keep my CYA around 40.

    Thanks!!

    Dan
    16 x 32 In-Ground vinyl, 21,000 Gallons, Hayward Cartridge Filter, Hayward Tiger Shark robotic cleaner, Taylor K-2006 Test Kit

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    Apr 2015
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    Re: How long to run Stenner pump?

    The 45MPHP10 pumps 10 gal/day=1.667 qts/hr=.889 ounces/min
    Lets say you find you normally need 1 qt/day, which is 32 ounces. You would run the Stenner for 32/.889=36min.
    I just set mine up. I'm monitoring it pretty close, with a low amount of run time due to cold water temps. I expect the demand to change as the water warms.
    20000 gallon vinyl liner in ground pool
    16' X 34' rectangular diving pool
    Hayward Pro Grid DE Filter
    Hayward 1 hp Super Pump
    TF-100 Test Kit Stenner 45MPHP10

  3. Back To Top    #3
    Richard320's Avatar
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    San Dimas, CA (LA County)
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    Re: How long to run Stenner pump?

    With full sun and 40 CYA, 3 ppm/day FC loss would be reasonable. That would be 93 ounces of 8.25% in a pool your size.

    93 ounces/ .89 ounces per minute = 104 minutes per day. Testing every day will tell you if that's too high or too low.

    You probably already know your pool's appetite, so if it's normally more or less than 93 ounces, adjust accordingly. I'd manually add to get to your target before starting the pump and just see how well it maintains things.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: How long to run Stenner pump?

    I have been more on the 93 ounces side the past few years when I add manually.

    Thanks to both of you!!

    Testing every day is fine but I am so looking forward to not having to add bleach each and every day. I can't tell you how many pair of pants I have ruined!!!
    16 x 32 In-Ground vinyl, 21,000 Gallons, Hayward Cartridge Filter, Hayward Tiger Shark robotic cleaner, Taylor K-2006 Test Kit

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    Apr 2015
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    Re: How long to run Stenner pump?

    Another nice thing that I'm finding is since I can add chlorine at any time, I split it up between two parts of the day. I used to overshoot the target FC level a bit so it would never drop too much by the next chlorine addition. Now I pretty much stay at the target level, knowing that there are more frequent doses.
    20000 gallon vinyl liner in ground pool
    16' X 34' rectangular diving pool
    Hayward Pro Grid DE Filter
    Hayward 1 hp Super Pump
    TF-100 Test Kit Stenner 45MPHP10

  6. Back To Top    #6

    Join Date
    Dec 2014
    Location
    Riverside California
    Posts
    473

    Re: How long to run Stenner pump?

    I was able to find a nice big funnel at an auto parts store. I find I get less splash back when using the funnel versus pouring straight into the tank (Stenner gray 15 gallon).
    38000 Gal, IG, Plaster, 20' x 40' x 10', Attached Raised Spa, Intelliflo VS 3 HP (011018), Pentair Quad DE 60 Filter, Raypak (Rheem) 400,000 BTU (407a low Nox), Easy Touch 8 upgrade, Screenlogic 2 with wireless, IS-4 Spa Side Remote, Stenner 45MPHP10 w/15 gal tank, Intellibrite 5g (3), Dolphin Triton Plus robot with PRO remote, Water Tech Catfish handheld vacuum for spa, TF100 with SpeedStir.

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