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Thread: When to run pool filter/pump (best times)

  1. #1

    When to run pool filter/pump (best times)

    First time poster and I'd like to say that this site is awesome for helping us noobie pool owners. My pool is clean and clear thanks to the knowledge posted here.Thanks to you all!

    I'd like to know if there is a best time of the day to run my filter (morning as opposed to evening?). Currently, I have a timer on it set to run from 10am to 8pm everyday. I do this because members of my family, typically and randomly, swim between those times. I'd like to cut it down to the recommended 8 hours. Would it be alright if I had the timer shut off the filter for an hour or two during the middle of the day?

    I had an idea of setting the timer to turn the filter on and off at set intervals through out a 24hour period. Is this advisable? (eg. 10am to 12pm, 2pm to 4pm, 6pm to 8pm, 10pm to 12pm)

    Thanks in advance.

  2. #2
    Junior Member
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    Re: When to run pool filter/pump (best times)

    Here in Texas, I was told to run the pool pump in the heat of the day, as that's the best time to chlorinate the pool. I was also told to run it for an hour for each 10 degrees of ambient temperature. So for the past 38 days, that's been 10 hours a day! It works great for me - no algae or clarity issues all year! Hope that helps, Bill

  3. #3

    Re: When to run pool filter/pump (best times)

    Thanks ToyGuy. Yeah, I've heard that too but I've read here that its the chlorine level that takes care of algae, not necessarily the filter. I too run it for 10 hours during high sun hours but I'd like to save some money on my electric bill if possible.

  4. #4
    Mod Squad Bama Rambler's Avatar
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    Re: When to run pool filter/pump (best times)

    If you ahve tiered electric rates you can run it whenever the cheapest rates are. I'd probably run it an hour in the middle of the off time just to keep the water stirred but the rest can be all at night if that's the best rates.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 1.5hp Dynamo pump. 24" Pentair Sand Dollar Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit
    You can stop SLAMing your pool when you pass the OCLT (You lose 1ppm or less FC overnight, & You have .5ppm CC's or less) & your water is clear.

  5. #5
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    Re: When to run pool filter/pump (best times)

    Hopefully some of the experts in the forum will comment on the 10 hours of run time per day. That sounds like a lot.
    IG pebbletec pool: size of pool: 27,000 gal; filter: cartridge - Hayward Superstar Clear; pump size: 1.5 HP; TF 100 Test kit - got it on 7-29-10; The Pool Cleaner-4-wheel suction model; Pool calculator: http://www.poolcalculator.com/; bleach calc: http://troublefreepool.com/files/BleachCalc262.exe

  6. #6
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    Re: When to run pool filter/pump (best times)

    It may depend on whether you have a single speed pump, two speed pump, or variable speed pump. And what speed or flow you run the pump at.

    I have a variable speed pump, and run the pump for more than 10 hours a day, buy at a relatively low flow of 23 gpm.

    Also, the number of hours is dependent on your particular pool characteristics, trees, dirt blowing in, swimmer load, etc.
    40 x 16 (28k gallon) plaster pool, Intelliflo VF pump, Hayward 48 sq. ft. DE filter, using Purifiber, using BBB

  7. #7
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    Re: When to run pool filter/pump (best times)

    Like many other things, you have to start somewhere, then tweak it to suit our own pool.

    I run my filter mainly at night, because the design of my pool tends to add a lot of heat in the summer. The pool does get some shade, but the spillover spa and the waterfall add a whole lot of heat from the southwest sun. I have to run the waterfall from time to time to keep it free of algae and I run it more in the cooler months when I am tying to add heat to the pool. I also run the Polaris a few times during the day and that gets some chlorine circulated.

    In all, my pool is getting 11 or 12 hours of total circulation, I think it is about 8 hours from midnight to 8 AM, then about 3 hours total from the waterfall and the Polaris. The waterfall in short bursts of 30 min each and the Polaris for longer, 2 hours total or maybe 3.
    23,000 gallon in ground pool with rock waterfall and spillover spa, Aqualink control system, Polaris 380 cleaner, Purex Triton Clean&Clear Plus cartridge filter. Located in The Woodlands, Texas.

    Pool owner since Nov 2008, Trouble Free since April 2009. Happy to help when I can.

  8. #8

    Re: When to run pool filter/pump (best times)

    Thanks to you all for your responses. I guess I will have to play around with it and figure out what works best.

    @Ride, I will have to calculate the flow rate of my pump. I'm sure its pretty high being a 1.5 hp pump and I am not sure if its variable speed. I doubt it. This pool was a "hand me down" from the previous owner of our house. Its an 18'x33' above ground with a Hayward sand filter.

    @anonapersona, does a running filter add heat to a pool?

  9. #9
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    Re: When to run pool filter/pump (best times)

    Turquoiseknight,

    See if you can find the pump manufacturer and model number on the side of the pump, and we could go from there.
    40 x 16 (28k gallon) plaster pool, Intelliflo VF pump, Hayward 48 sq. ft. DE filter, using Purifiber, using BBB

  10. #10

    Re: When to run pool filter/pump (best times)

    The pump is a Hayward Powermatrix, Model # SP1593FP. I just looked it up and there is a chart here http://www.hayward-pool.com/prd/Abov...1_14017__A.htm

    I think its telling me that its putting out 86 gpm!

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