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Thread: Two Speed Pump Question

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    Two Speed Pump Question

    My AGP came with a 1.5 hp 2 speed pump. I've been running it on high 24x7 since it was filled. Mostly cuz I'm terrified of things going bad. My pool is sparkling and passing oclt. But I'm thinking that's due to being less than 2 weeks old and not that I've mastered BBB (but I'm sure trying!). If I switch to low speed and continue running all day and things go south, would it happen slowly so I can stay in front of a problem or could I be up a creek overnight? Thx!
    Just bought a new house in the country, no pool yet. :(
    Hot tub..500 gals..bromine
    TF100 test kit and speedstir

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    Mod Squad jblizzle's Avatar
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    Re: Two Speed Pump Question

    If you are maintaining your FC in the correct range, nothing will happen overnight. Running on low would be fine. it just may not skim the surface quite as well. There is really no reason to be running it all day anyway.

    Posted with Tapatalk ... sorry if I sound short ... hate typing on phone
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    Re: Two Speed Pump Question

    Seriously, 1.5 hp for 24/7 on 23000 gals is major overkill. Each pool is different, but I have a 1hp 2-speed on 28000 gals and I do fine for 12 hrs on low (DE filter).
    Current: 28,000G 18'x36' I/G AnthonySylvan Plaster; Waterway 60 sq.ft. DE Filter; 1.0hp x 1.65 SF Two-Speed (B2982) WhisperFlo; 2004-Present
    Previous: 40,000G 20'x40' I/G Koven unlined WWII salvage 5/8" marine steel; Lomart Stainless Sand Filter; 3/4hp Hayward SuperPump; 1946-2003 (managed by me from about 1964)
    Ancient Taylor K-2000, upgraded with Taylor CH, TA, and FAS-DPD, and TFT CYA tests.

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    linen's Avatar
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    Re: Two Speed Pump Question

    I run my pump exclusively on low unless I am using the solar...which has not been needed lately.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    mas985's Avatar
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    Re: Two Speed Pump Question

    Quote Originally Posted by Durk
    Seriously, 1.5 hp for 24/7 on 23000 gals is major overkill. Each pool is different, but I have a 1hp 2-speed on 28000 gals and I do fine for 12 hrs on low (DE filter).
    The OPs AG pump is probably smaller than your Whisperflo. Most AG pumps are either up rated or SPL rated (double up rated). Add to that, the Whisperflo is a very powerful pump for it's rating. For example:

    Whisperflo 1 HP full rated pump on Curve-A plumbing produces 63 GPM

    Matrix 1.5 HP up rated pump on Curve-A plumbing produces 53 GPM
    Optiflo 1.5 HP up rated pump on Curve-A plumbing produces 51 GPM
    Dynamo 1.5 HP SPL rated pump on Curve-A plumbing produces 49 GPM

    I just wanted to point out that label ratings are not very meaningful especially when comparing AG to IG pumps.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Re: Two Speed Pump Question

    I have the solar cover on otherwise I lose lots of water to evaporation with our 100+ temps. Does the cover change the amount of time to run the pump?
    Just bought a new house in the country, no pool yet. :(
    Hot tub..500 gals..bromine
    TF100 test kit and speedstir

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    mas985's Avatar
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    Re: Two Speed Pump Question

    The solar cover can help reduce FC UV loss so you might not have to add as much chlorine but this has little to do with pump run time. Pump Run time is mainly for cleaning the water of debris and dirt. So the run time is entirely up to you and how clean you want the pool. Don't confuse this with keeping the pool algae free because that has more to do with keeping the correct FC levels.

    Currently, I am running my pump for 4 hours per day, 2 hours on high speed and 2 hours on low speed. That gives my SWG enough time add FC and my vacuum enough time to clean the floor.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Re: Two Speed Pump Question

    Quote Originally Posted by mas985
    Quote Originally Posted by Durk
    Seriously, 1.5 hp for 24/7 on 23000 gals is major overkill. Each pool is different, but I have a 1hp 2-speed on 28000 gals and I do fine for 12 hrs on low (DE filter).
    The OPs AG pump is probably smaller than your Whisperflo. Most AG pumps are either up rated or SPL rated (double up rated). Add to that, the Whisperflo is a very powerful pump for it's rating. For example:

    Whisperflo 1 HP full rated pump on Curve-A plumbing produces 63 GPM

    Matrix 1.5 HP up rated pump on Curve-A plumbing produces 53 GPM
    Optiflo 1.5 HP up rated pump on Curve-A plumbing produces 51 GPM
    Dynamo 1.5 HP SPL rated pump on Curve-A plumbing produces 49 GPM

    I just wanted to point out that label ratings are not very meaningful especially when comparing AG to IG pumps.
    Granted, but I was comparing my low speed to his high (only) speed....
    Current: 28,000G 18'x36' I/G AnthonySylvan Plaster; Waterway 60 sq.ft. DE Filter; 1.0hp x 1.65 SF Two-Speed (B2982) WhisperFlo; 2004-Present
    Previous: 40,000G 20'x40' I/G Koven unlined WWII salvage 5/8" marine steel; Lomart Stainless Sand Filter; 3/4hp Hayward SuperPump; 1946-2003 (managed by me from about 1964)
    Ancient Taylor K-2000, upgraded with Taylor CH, TA, and FAS-DPD, and TFT CYA tests.

  9. Back To Top    #9

    Re: Two Speed Pump Question

    I also have a 30' round, though mine is 1.5 weeks old It came with a Waterway 2hp 2speed pump. Hubby looked up the specs at UL and said it's really only a 1.5hp... so, marketing definitely plays a roll here. Anyway, we're running on low probably 8-10 hours a day pushing through a 27" sand filter. The only time I've had it on high was today when we put the fountain in to drop the temp a couple degrees. I can't imagine how HOT the water might be getting with the solar cover on. We hit 90 in the water and it feels very warm.

    I think you could cut back to running it on low and not 24/7. Will definitely save you on the energy. How are you loving the pool? We've been in a couple times a day every day! I'm also curious if you've measured your water level. I can't seem to agree on how many gallons to use in the calculator. One time I measured and it was just under 48" but I think I've topped it up a bit more. The highest I had the water at was 21500 gallons... do you have a deeper dig? Just curious since it effects dosing to know if I'm guessing right
    Vogue Vectra 30' Round (21,200 gallons), Waterway 2HP 2-speed, 27" sand filter - TF100 -- Southern IL - Install 06/2012
    Last minute upgrade from 27' due to error in dealer inventory *yikes*

  10. Back To Top    #10

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    Re: Two Speed Pump Question

    I did have the center dug a little deeper so I went up to 23000 gals. We are loving the pool. The temps here are 100+ daily, heck the lows at night are usually low 80s. But for some reason my pool stays at about 80 degrees. Too cold!!! LOL. With the solar cover on it's gotten to 84. I don't get it when I read posts from up north with 90 degree pools. I wish! Thank goodness for the hot tub to jump in and warm up. So I've switched the pump to low. Did run it on high when putting in bleach last night for about 1-1/2 hrs. If all goes well this week, then I will cut back from running it all day. Happy 4th!
    Just bought a new house in the country, no pool yet. :(
    Hot tub..500 gals..bromine
    TF100 test kit and speedstir

  11. Back To Top    #11
    linen's Avatar
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    Re: Two Speed Pump Question

    How much sun does your pool get? Mine only gets 4-5 hours direct, so my pool is at 83 right now (perfect in my opinion). My neighbor with a similar pool who gets sun all day is above 90.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

  12. Back To Top    #12

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    Re: Two Speed Pump Question

    I get full sun from sun up to sun down. Only thing I can figure is we are on 10 acres in the country so nothing to block a pretty constant breeze. Go figure I want mine warmer, in Texas no less, and cant seem to get it warmer. Maybe later in July and August when it's 110 here. Only other thing I was doing differently than the rest of you was running pump on high all day. We shall see if cutting back on pump running changes the temp.
    Just bought a new house in the country, no pool yet. :(
    Hot tub..500 gals..bromine
    TF100 test kit and speedstir

  13. Back To Top    #13
    linen's Avatar
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    Re: Two Speed Pump Question

    I would put the solar cover on at night and take it off only when sun is on the pool or when the ambient temperatures exceed the pool temp by at least ~5 degrees F. How are you doing it now?
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

  14. Back To Top    #14

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    Re: Two Speed Pump Question

    Right now it's only taken off when people are swimming. It's a booger to get it on and off. Deck to be started within the week. Then I will build a solar cover stand (found some diy on this site). Just have to wait for deck to determine placement. This site has sooooo much info you can learn. Thanks everyone!
    Just bought a new house in the country, no pool yet. :(
    Hot tub..500 gals..bromine
    TF100 test kit and speedstir

  15. Back To Top    #15

    Re: Two Speed Pump Question

    To say it's a booger is an understatement! We hit 105+ the past week and that's when the water temp soared. I have to admit, it's been nice not to wrestle with the cover. What is the deck you are building like? We're in the "dream of deck" phase
    Vogue Vectra 30' Round (21,200 gallons), Waterway 2HP 2-speed, 27" sand filter - TF100 -- Southern IL - Install 06/2012
    Last minute upgrade from 27' due to error in dealer inventory *yikes*

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