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

Thread: still confused about target FC

  1. Back To Top    #1

    Join Date
    Aug 2016
    Location
    Naples, Florida
    Posts
    36

    still confused about target FC

    I have read and reread everything but confused about target FC. Should I maintain a 4-6 FC or shoot for higher esp with swim season starting and hotter days. Still unsure of myself but so far pool water looking good.
    FC 6.5
    CC 0
    PH 7.8 ( added acid)
    CH 375
    TA 80
    CYA 75
    replastered May 2016 15000gal IG plaster/stonescapes with attached spa/waterfall Pentair intelliflo 1.5HP cartridge filter Breeze SWG
    TF 100kit/speedstir

  2. Back To Top    #2
    Mod Squad Jimrahbe's Avatar
    Join Date
    Jul 2014
    Location
    Bedford, TX
    Posts
    9,310

    Re: still confused about target FC

    L,

    See this chart... https://www.troublefreepool.com/cont...art-slam-shock

    In a Saltwater pool, with a CYA of 75 (round up to 80) then your target is 6 and the minimum you ever what to let your FC drop to is 4. So, technically 4 to 6. But... I suggest you shoot for something that keeps you from ever dropping below 4, so my "Target" would be 5 to 7, this gives you a little wiggle room.

    I'm going to suggest that we change our chart to show the "Target" values for SWCG pool in the same format that we should the target value for Non-SWCG pools.

    Thanks for posting,

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

  3. Back To Top    #3
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    Location
    East Texas
    Posts
    10,158

    Re: still confused about target FC

    4-6 should do you just fine with a SWG with it's run time spread out over the pump run time.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

  4. Back To Top    #4

    Join Date
    Aug 2016
    Location
    Naples, Florida
    Posts
    36

    Re: still confused about target FC

    Thanks for the replies! I
    replastered May 2016 15000gal IG plaster/stonescapes with attached spa/waterfall Pentair intelliflo 1.5HP cartridge filter Breeze SWG
    TF 100kit/speedstir

  5. Back To Top    #5
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    24,974

    Re: still confused about target FC

    Here is the general idea. Minimum FC level is a number that you never want to drop below, ever. Target is a suggestion because most SWG pools will lose less than 2 ppm from the time the SWG shuts off to the time it starts up again. Any number above target is fine, whatever number is needed to make sure that the FC doesn't drop below minimum. It is safe to swim with FC up to shock level for your CYA.

    In your case with CYA of 75, we round to 80, because the CYA test is logarithmic, so halfway between 70 and 80 is not 75. With CYA of 80 your minimum FC level is 4 ppm. Which means that you do not want your FC to be below 4 when the SWG starts up for the first time of the day. If 6 covers that then good. If not, then target 7 or 8 or whatever be plumber is necessary to make sure that FC is 4 when the SWG starts for the day. It is safe to swim with FC levels up to 31 ppm. So, you could safely keep you FC at 8 or 9 if you wanted to or needed to.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  6. Back To Top    #6

    Join Date
    Aug 2016
    Location
    Naples, Florida
    Posts
    36

    Re: still confused about target FC

    I have been concerned about having too much chlorine for my cya, but it sounds like I don't need to be. FC has been running 5-8 all winter with cya at 80.
    Thanks
    replastered May 2016 15000gal IG plaster/stonescapes with attached spa/waterfall Pentair intelliflo 1.5HP cartridge filter Breeze SWG
    TF 100kit/speedstir

  7. Back To Top    #7
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    24,974

    Re: still confused about target FC

    That is perfect!
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

Posting Permissions

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