Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 14 of 14

Thread: CC=.5 FC=14 Need advice to lower FC

  1. Back To Top    #1
    Glock30's Avatar
    Join Date
    Apr 2012
    Location
    Massachusetts, USA
    Posts
    90

    CC=.5 FC=14 Need advice to lower FC

    Tested my water again last night trying to prep the pool for the upcoming long weekend.

    FC=14 (28 drops of reagent)
    CC=.5 (possibly less)
    TA=150
    CYA holding steady at 75
    pH 7.5

    I am new so please bear with me.
    I bought my SWG oversize to reduce wear and tear but I am only running it at 20% for 5 hours a day and getting these results.
    I reduced the SWG run time last night to 3 hrs. a day and we will see what that does.

    Any other suggestions out there as to what I am missing that my FC is so high? Better than alge I guess

    I also figured out that I was doing the tests wrong with my TF100 Kit.
    It should state in the directions that the bottles should be held upside down and not horizontal when counting drops.
    This may seem obvious to some, but I have never done this before and was getting small drops and therefore inaccurate readings.
    Results above are with bottles upside down when counting drops.
    18' X 36' Inground Pool 26,000 gallons. SuperMax 27mil/27mil Vinyl Liner-Installed Fall 2011
    Pentair Intellipro Programable Pump (Model 011018) // Pentair S8M 500 Cartridge Filter // Circupool RJ45 Salt Chlorinator
    2 Hayward Skimmers // 3 Returns // 2 Savi Melody Pool lights // TF-100 Test Kit.

  2. Back To Top    #2
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Location
    Houston, Texas
    Posts
    9,200

    Re: CC=.5 FC=14 Need advice to lower FC

    You will need to play with the pump run times and percentages so you get enough pump time to turn the water over once per day and don't over chlorinate the pool. You may try leaving the SWG off for 24 hours and see how much the FC drops.
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
    Love TFP? Become a
    TFP Supporter!

  3. Back To Top    #3
    Glock30's Avatar
    Join Date
    Apr 2012
    Location
    Massachusetts, USA
    Posts
    90

    Re: CC=.5 FC=14 Need advice to lower FC

    zea3
    Thanks for the reply.
    I currently run the pump for about 8.5 hrs. turning over the pool about 1.1 times during this span.
    18' X 36' Inground Pool 26,000 gallons. SuperMax 27mil/27mil Vinyl Liner-Installed Fall 2011
    Pentair Intellipro Programable Pump (Model 011018) // Pentair S8M 500 Cartridge Filter // Circupool RJ45 Salt Chlorinator
    2 Hayward Skimmers // 3 Returns // 2 Savi Melody Pool lights // TF-100 Test Kit.

  4. Back To Top    #4

    Join Date
    Jul 2010
    Location
    Philly
    Posts
    332

    Re: CC=.5 FC=14 Need advice to lower FC

    You could double check your Chlorine test results against the simple colormetric test. I forget what color 14 ppm matches but it should be somewhat near orange or at least a very dark yellow. Maybe someone with a better memory than me can chime in.
    Bill
    18'X4' 7600 Gal AG
    3/4 HP Pentair Pump
    Hayward S166T 100 lb sand filter

  5. Back To Top    #5
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: CC=.5 FC=14 Need advice to lower FC

    14 is high enough that the OTO test should show orange.

    Have you been using a solar cover on the pool? That would greatly cut down on chlorine consumption.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  6. Back To Top    #6
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: CC=.5 FC=14 Need advice to lower FC

    Quote Originally Posted by zea3
    You will need to play with the pump run times and percentages so you get enough pump time to turn the water over once per day and don't over chlorinate the pool. You may try leaving the SWG off for 24 hours and see how much the FC drops.
    Wait ... possible conflicting info from the OP.

    Do you have a separate timer on the pump and on the SWG? If so, then reducing the pump run time will have no affect on the amount of FC being added to the pool (unless you made the pump run time shorter than the SWG on time).

    I believe that 20% is as low as you can go without the automation controller. If so, then all you can do is reducing the SWG on time even further.
    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
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  7. Back To Top    #7
    Glock30's Avatar
    Join Date
    Apr 2012
    Location
    Massachusetts, USA
    Posts
    90

    Re: CC=.5 FC=14 Need advice to lower FC

    Is the OTO test the plastic Cl/Br & pH test in the blue container?
    If so, yes is shows light orange.

    No solar cover.

    Pump timer (schedule) runs seperately from SWG.
    Here are the times after I adjusted the SWG run time down 2 hours Tuesday:
    Pool Pump Schedule Pentair Intelliflow (011018) RPM / 27 = ~GPM
    1) 9:45 AM-10:00 AM @750 RPM ~ 28 gpm x 15 min. = 420 Gal. ( Pump Warmup)
    2) 10 AM-10:30 AM @2350 RPM ~ 87 gpm x 30 min. = 2610 Gal. (Skim) SWG ON @ 10:05 AM
    3) 10:30 AM-11:30 AM @ 1500 RPM ~ 55.5 gpm x 60 min =3330 Gal.
    4) 11:30 AM-1:30 PM OFF SWG OFF @ 11:25 AM
    5) 1:30 PM-8:30 PM @1500 RPM ~55.5 gpm x 420 min. = 23310 Gal. SWG ON @ 1:35 PM
    6) SWG OFF @ 3:00 PM
    29,670 Gallons Circulated in 8.75 hrs.

    I dropped about 2-3 ppm in a day running this schedule.
    The previous is the same but the SWG runs 2 more hours until 5 PM.

    Thanks
    18' X 36' Inground Pool 26,000 gallons. SuperMax 27mil/27mil Vinyl Liner-Installed Fall 2011
    Pentair Intellipro Programable Pump (Model 011018) // Pentair S8M 500 Cartridge Filter // Circupool RJ45 Salt Chlorinator
    2 Hayward Skimmers // 3 Returns // 2 Savi Melody Pool lights // TF-100 Test Kit.

  8. Back To Top    #8
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: CC=.5 FC=14 Need advice to lower FC

    So do people with the intelliflo intentionally make their pump schedules overly complicated just because they can?

    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
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  9. Back To Top    #9
    Glock30's Avatar
    Join Date
    Apr 2012
    Location
    Massachusetts, USA
    Posts
    90

    Re: CC=.5 FC=14 Need advice to lower FC

    Absolutely!!! :P
    My goal is actually to turn my water over as efficiently as possible and utilize the pump features to that end.

    Don't be a hatin' on my pump
    18' X 36' Inground Pool 26,000 gallons. SuperMax 27mil/27mil Vinyl Liner-Installed Fall 2011
    Pentair Intellipro Programable Pump (Model 011018) // Pentair S8M 500 Cartridge Filter // Circupool RJ45 Salt Chlorinator
    2 Hayward Skimmers // 3 Returns // 2 Savi Melody Pool lights // TF-100 Test Kit.

  10. Back To Top    #10
    Glock30's Avatar
    Join Date
    Apr 2012
    Location
    Massachusetts, USA
    Posts
    90

    Re: CC=.5 FC=14 Need advice to lower FC

    Follow up.

    With SWG on 20% and running 3 hrs a day, I am losing about 3 FC ppm/day (partly sunny).
    I will continue this until it reaches ~7ppm and then increase to 30% and see if it holds.

    Regards,
    18' X 36' Inground Pool 26,000 gallons. SuperMax 27mil/27mil Vinyl Liner-Installed Fall 2011
    Pentair Intellipro Programable Pump (Model 011018) // Pentair S8M 500 Cartridge Filter // Circupool RJ45 Salt Chlorinator
    2 Hayward Skimmers // 3 Returns // 2 Savi Melody Pool lights // TF-100 Test Kit.

  11. Back To Top    #11
    bobodaclown's Avatar
    Join Date
    Apr 2011
    Location
    Lakeland, FL
    Posts
    2,351

    Re: CC=.5 FC=14 Need advice to lower FC

    Glock sounds like a good plan. Why not run at 26-28 gpm for 15 hours and maybe 1/2 to an hour to skim. Save a bit and still do same turnover. Sounds like you are able to set your SWCG to run independently from the pump, so as long as water is flowing it will produce. You'll get the best of both worlds. Less stagnant water an lower electric consumption. 750 rpm = 28 gpm, 26000 gallons/28 gpm= 929 minutes , 929 minutes /60 min hours = 15.5 hours.
    What rpm is your most efficient pump rate?
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

  12. Back To Top    #12
    Glock30's Avatar
    Join Date
    Apr 2012
    Location
    Massachusetts, USA
    Posts
    90

    Re: CC=.5 FC=14 Need advice to lower FC

    bob,
    I do not think I can run at 750 rpm and still ahve my skimmers work well.
    Unless you are saying run that low just to filter etc?

    I do not think I can answer your "What rpm is your most efficient pump rate?" question as I do not know.
    18' X 36' Inground Pool 26,000 gallons. SuperMax 27mil/27mil Vinyl Liner-Installed Fall 2011
    Pentair Intellipro Programable Pump (Model 011018) // Pentair S8M 500 Cartridge Filter // Circupool RJ45 Salt Chlorinator
    2 Hayward Skimmers // 3 Returns // 2 Savi Melody Pool lights // TF-100 Test Kit.

  13. Back To Top    #13
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: CC=.5 FC=14 Need advice to lower FC

    You want to pick a pump speed based on the skimmers working effectively and keeping the SWG happy. Once you have figured out what that speed is there is no need to use any other speed (unless you have additional equipment, like a heater, solar system, or pump driven pool cleaner). Running the pump faster than that serves no purpose. Then you figure out how long you need to run the pump, based on keeping the water sparkling and providing enough run time for the SWG. This is usually a lot shorter than you think it is. The best way to set this up is as several short segments spread out across 24 hours. That will help the skimmers catch any floating debris before it sinks to the bottom.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  14. Back To Top    #14
    bobodaclown's Avatar
    Join Date
    Apr 2011
    Location
    Lakeland, FL
    Posts
    2,351

    Re: CC=.5 FC=14 Need advice to lower FC

    Depends on what your trying to accomplish, Jason summed it up pretty accurately though. Pool pumps are usually more efficient at lower speeds. That's why I recommended 750 rpm.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

Posting Permissions

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