Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 7 of 7

Thread: Run Filter at Night

  1. Back To Top    #1

    Join Date
    Feb 2016
    Location
    Plano
    Posts
    20

    Run Filter at Night

    Hi All,
    I have been researching this from last few days about running my pool filter at night to utilize free electricity from 9pm-6am. I read in different forums that people do run at night and they are fine with it.

    I talked to the local leslie's pool store guy and he said "dont do it, you will have algae problems."

    I have been running my filter from past 2 months in the night, but summer is going to be different.

    I am planning on buying a solar/uv cover and cover it during the day and running the filter at night.

    Really appreciate any suggestions or someone who has already done this.

    15000/SWCG/Spa

    Thanks

  2. Back To Top    #2
    Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    12,954

    Re: Run Filter at Night

    Free electricity! I want some! Ignore the Leslie's comment. You can run that pump at ANY time day or night you want to. Many folks split run times across day/evening. Use your own experience to determine how long to run your pump to remain clear. Pool School - Determine Pump Run Time The simple fact is that it's the water chemistry that will prevent algae, not pump time. The pump circulates the chemicals and provides surface (water) movement towards the skimmer, but your bleach will maintain the proper FC level to keep the water clear.

    As for your proposed cover, it should keep the Texas sun off the water to help save some FC which will be nice.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  3. Back To Top    #3

    Join Date
    Jan 2014
    Location
    Buckeye AZ
    Posts
    807

    Re: Run Filter at Night

    the leslie's person is probably saying that because tabs need circulation to dissolve and spread into the pool, and during the day the FC burns off and without the pool running, the tabs aren't dispensing.

    IF you start your day with the proper level of FC, enough PPM above the minimum that you will still be above the minimum by sundown, you will be fine. A lot of us prefer to add liquid chlorine after sundown so that the chlorine can work all night throughout the pool without the sun burning it off. Just need the pump to run at least for 30 minutes after adding the liquid chlorine, if not all night.
    10,500 gal IG, Topaz Pebble, auto-level
    Hayward DE filter, 2HP Ecostar VSP, ProLogic PS-4, GVA actuators
    Cal Pools Wave Force Plus (wall return jets plus 2 floor pop-ups), Venturi Skimmer
    Water sheer, 2 wok pots, bubbler stem on the baja step
    ColorLogic Mutlicolor LED lamp. Taylor 2006+speed stir

  4. Back To Top    #4

    Join Date
    Feb 2016
    Location
    Plano
    Posts
    20

    Re: Run Filter at Night

    Mine is salt water and dont think i will be using tabs.

    So if the SWCG runs all night, wouldn't i have enough FC during the day?


    15000 gallon with spa, plaster, hayward ctg filter, advantageman 2hp motor, bleach, poolvac XL

  5. Back To Top    #5
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Location
    Columbia, SC
    Posts
    8,495

    Re: Run Filter at Night

    Quote Originally Posted by Nayabsaiyed View Post
    Mine is salt water and dont think i will be using tabs.

    So if the SWCG runs all night, wouldn't i have enough FC during the day?


    Sent from my iPhone using Tapatalk
    Yes, that is what the target level is all about. As an example, if your SWCG pool has a CYA of 80, we recommend that the FC never go below 6, so we say target 8. In your case if in the morning your FC is 8 it will slowly drift down during the day, hopefully staying above 6 by the end of the day. If you find that you drop below 6, just raise your target a little. It wil probably take a few days of morning/night tests to work out the details for your pool.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

  6. Back To Top    #6

    Join Date
    Feb 2016
    Location
    Plano
    Posts
    20

    Re: Run Filter at Night

    My CYA dropped to 50 and FC is 5. Should I keep the FC above 8?

  7. Back To Top    #7
    Mod Squad YippeeSkippy's Avatar
    Join Date
    Jan 2012
    Location
    'burbs of Augusta, Georgia
    Posts
    6,479

    Re: Run Filter at Night

    You need to raise your CYA level for both the SWG and also against the blazing Texas sun. That will help you maintain FC better. 80 is a good number.

    Pleae refer to the Chlorine/CYA chart under the Pool School link.
    My Amazon Smile for November12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Our pool build--> Our Pool Solved Our Sloping Yard Skippy's Cheap Pool Cooler -->Skippy's New Fountain

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •