Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 8 of 8

Thread: FC loss

  1. Back To Top    #1

    FC loss

    Hi-

    I finished the shock process on 8/25. cya 65ish, CC either .5 or less. My question is loss since then

    8/25
    FC 22
    at 6:40am

    at 9:50pm
    FC 13.5

    8/26
    9:00pm
    FC 6.5 took back to 10

    8/27
    9;00pm
    FC 3.5 took back to 10, closed pool a bit later

    Today the pool had royal blue auto cover on until 1:30pm. 2 hours later checked FC was 6.

    is this normal?

    Also cleaned out pump pot looked in the chlorinator(has been empty for weeks) there was a sludge in it? residue from the sticks? had it really cranked up before.

    Thanks
    IG 24,000 vinyl lined
    18x36
    sand filter
    chlorinator
    automatic cover with no fence

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: FC loss

    Were you passing the OCLT?
    Are you sure your CYA is that high?
    Loosing ~7ppm every day is pretty high. Loosing 2-4ppm is more "normal"
    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!

  3. Back To Top    #3

    Re: FC loss

    i had passed the OCLT so let it drift back to normal. thinking i would take it to 10 at night and then would be good. pretty sure we are 65-70. rain coming this weekend possibly so hoping to bring down.

    any thoughts on sludge?
    IG 24,000 vinyl lined
    18x36
    sand filter
    chlorinator
    automatic cover with no fence

  4. Back To Top    #4
    linen's Avatar
    Join Date
    Jul 2010
    Location
    Twin Cities, MN
    Posts
    8,649

    Re: FC loss

    I agree with jbliz...that FC loss seems a bit high for my liking...especially with your relatively high cya level. I would do a OCLT tonight, just to see if anything is growing.
    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.

  5. Back To Top    #5

    Re: FC loss

    Anyone know anything about the chlorinator residue it sludge. Normal? I'm going to use soon when we go out of town.
    IG 24,000 vinyl lined
    18x36
    sand filter
    chlorinator
    automatic cover with no fence

  6. Back To Top    #6
    Bjarni's Avatar
    Join Date
    May 2012
    Location
    Albuquerque, NM
    Posts
    51

    Re: FC loss

    Quote Originally Posted by poolgirl10
    Anyone know anything about the chlorinator residue it sludge. Normal? I'm going to use soon when we go out of town.
    Are you using Trichlor? Is the "sludge" hard and white or is it something else?
    9K gal. IG Fiberglass Pool
    1 HP Pentair SuperFlo Pump
    240 sqft. Pentair Cartridge Filter
    Non-SWG

  7. Back To Top    #7

    Re: FC loss

    was using the tricolor a lot. I quit a few weeks ago-maybe a month. It is not hard. it was easy to wipe out with paper towels. just like a sludge but whiteish. binder in sticks?
    IG 24,000 vinyl lined
    18x36
    sand filter
    chlorinator
    automatic cover with no fence

  8. Back To Top    #8
    Bjarni's Avatar
    Join Date
    May 2012
    Location
    Albuquerque, NM
    Posts
    51

    Re: FC loss

    Being that its white I would say its probably just Trichlor residue and nothing to worry about.
    9K gal. IG Fiberglass Pool
    1 HP Pentair SuperFlo Pump
    240 sqft. Pentair Cartridge Filter
    Non-SWG

Posting Permissions

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