Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: CSI question

  1. Back To Top    #1
    Capstone's Avatar
    Join Date
    Jul 2015
    Location
    Alabama
    Posts
    10

    CSI question

    I am confused about CSI and if I need to do anything. I tested my pool today for the first time using the Taylor kit. The results were as follows:

    FC = 5.8 ppm
    CC = 0 ppm
    pH = 7.6
    TA = 120 ppm
    CH = 120 ppm
    CYA = 58 ppm

    With a pool temp of 45 degrees F; I calculated a CSI of -0.4

    Is this an issue?

    Thanks.
    40,000 gal vinyl saltwater; Pentair Intellichlor, Pentair Intellibrite 5g; Pentair cartridge filter

  2. Back To Top    #2

    In the Industry

    bdavis466's Avatar
    Join Date
    Aug 2014
    Location
    Riverside, CA
    Posts
    3,303

    Re: CSI question

    Low CSI values can be dismissed with a vinyl liner pool. The bigger issue to be concerned with is high CSI values (> +0.6= Scale) and pH below 7 ( due to possible copper damage (if a heater or copper piping is present).

    Seasonal drops in temperature and subsequent drops in CSI are expected and of relatively little concern.
    -Brian-
    33K Pool/Spa, Pentair Equipment
    POOL BUILD
    Davis Custom Construction - Home Page

  3. Back To Top    #3

    Join Date
    Aug 2014
    Location
    Northern IL
    Posts
    4,615

    Re: CSI question

    Also, if you would like to save on reagents, you can use a 10ml sample for FC/CC and multiply the drops by 0.5. The directions are on the inner lid of your testkit box.

  4. Back To Top    #4
    Capstone's Avatar
    Join Date
    Jul 2015
    Location
    Alabama
    Posts
    10

    Re: CSI question

    Thanks.



    40,000 gal vinyl saltwater; Pentair Intellichlor, Pentair Intellibrite 5g; Pentair cartridge filter

Posting Permissions

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