Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: Getting FC Right

  1. Back To Top    #1

    Join Date
    Jun 2008
    Location
    Avon Park, FL
    Posts
    15

    Getting FC Right

    These are my readings from this morning:
    CYA 50
    PH 7.6
    FC 2
    TA 130

    I had an algae problem and did the shocking procedure with bleach to get the algae under control. I have been doing as suggested with adding the daily ppm with bleach at night to make up for the loss with the sun. I can't seem to get the FC level between 4-8 as recommended by the pool calculator. It stays around 2-3 with FC. Is this because of my TA level? Last week the TA was 110. We had rain last night also, so I am not sure how much that would have changed the FC but any suggestions would be helpful. This is a great site by the way.
    15200 Gallon, Vinyl, Cartridge Filter 100 GPM, SWG

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: Getting FC Right

    With a CYA of 50, you want FC to always be 4 or higher. Have you tried raising FC to around 8 in the evening? When you do that, what is the FC level the next evening? One thing to try is to test your FC level 30 minutes after adding chlorine to be sure your chlorine is actually getting into the pool the way you think it is.

    TA has no direct relationship with FC. TA mostly affects how the PH varies.
    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

  3. Back To Top    #3

    Join Date
    Jun 2008
    Location
    Avon Park, FL
    Posts
    15

    Re: Getting FC Right

    I found the problem. It was a dumb user error. I was using the reagents from last year. I tried the new one I bought a couple weeks ago and my FC shows higher than the 5. I will be ordering the TF kit within the next week. Sorry for the confusion.
    15200 Gallon, Vinyl, Cartridge Filter 100 GPM, 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
  •