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

Thread: 1st Test Results with TF100 Kit - What should I do now?

  1. Back To Top    #1

    Join Date
    Jun 2016
    Location
    Rochester/NY
    Posts
    5

    1st Test Results with TF100 Kit - What should I do now?

    Daily Test:
    CL = 5
    PH = 7.2

    Weekly Test:

    FC = 11.5
    CC = 1.5
    TC = 13
    CH = 250
    TA = 100
    CYA = 100

    This is my 1st year with a pool. It came with auto chlorinator using 3" tabs.
    24K gal, IG vinyl, Emerson 1hp pump, Hayward S-200 Sand Filter, Hayward automatic chlorinator, Baracuda cleaning robot

  2. Back To Top    #2

    TFP Guide

    Jezza's Avatar
    Join Date
    Jan 2015
    Location
    Bunbury, WA, Australia
    Posts
    843

    Re: 1st Test Results with TF100 Kit - What should I do now?

    You have a couple of concerns- firstly you have a high CYA which is being caused by the tabs you are using for your chlorinating. You need to consider a drain of your water to bring this level down and pull the tabs -start using bleach or liquid chlorine.

    You also have a high CC which is also a concern. How does the water look?
    11 000 gallons, IG, Fibreglass, Monarch Sand Filter, Davey Typhoon C100M 1HP pump, Davey Chloromatic Mc16CTO ESR SWG, Davey Pool Wall Climba Robot, Daisy Solar Cover,
    K-2006

  3. Back To Top    #3
    needsajet's Avatar
    Join Date
    Jan 2016
    Location
    Sydney, NSW, Australia
    Posts
    3,552

    Re: 1st Test Results with TF100 Kit - What should I do now?

    Welcome to TFP! Good to have you here And thanks for posting your test results.

    How does the water look to you? Could you post a picture looking down at your steps, or with your brush or cleaner in the deep end? Your numbers look good except for the combined chlorine.

    CYA may be higher than 100, so I'd recommend the diluted test. See #9 in Pool School - CYA

    - - - Updated - - -

    Haha, simultaneous help from Aus! Jezza will be awake longer than me, and he has you covered!
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

  4. Back To Top    #4

    Join Date
    Jun 2016
    Location
    Rochester/NY
    Posts
    5

    Re: 1st Test Results with TF100 Kit - What should I do now?

    The water looks very clear.

    I will do the diluted CYA teat today when I get home.

    So I should stop using tabs completely?

    What should my CC be?

    If I turn chlorinator of completely, I assume CC will drop & when desired level is achieved, I can maintain with bleach added directly to pool?
    24K gal, IG vinyl, Emerson 1hp pump, Hayward S-200 Sand Filter, Hayward automatic chlorinator, Baracuda cleaning robot

  5. Back To Top    #5

    TFP Guide

    Jezza's Avatar
    Join Date
    Jan 2015
    Location
    Bunbury, WA, Australia
    Posts
    843

    Re: 1st Test Results with TF100 Kit - What should I do now?

    Yes- you have to stop using the tabs now- they will continue to add CYA and that will mean more of a water drain to get it down to a reasonable level if it is astronomically high. Use bleach and the Poolmath tab to calculate your additions.

    CC's should be <0.5. CC's are brought down by chlorine and sunlight although if you have organics in your pool it could take a possible SLAM to get on top of it and bring it down to an acceptable level.

    But your focus now should be on establishing your actual CYA as first priority.
    11 000 gallons, IG, Fibreglass, Monarch Sand Filter, Davey Typhoon C100M 1HP pump, Davey Chloromatic Mc16CTO ESR SWG, Davey Pool Wall Climba Robot, Daisy Solar Cover,
    K-2006

  6. Back To Top    #6
    Pool Tool's Avatar
    Join Date
    May 2014
    Location
    Western Chicago Area, IL
    Posts
    754

    Re: 1st Test Results with TF100 Kit - What should I do now?

    Just to elaborate, CC's are not something that is directly added to your pool. Think of CC's as spent FC. They are a byproduct, a leftover, of FC oxidizing organic material. A healthy, well balanced pool will have less than 0.5 ppm CC's. As Jezza noted, sunlight will remove CC's, this is why leaving a cover on can cause a high CC reading temporarily, as well as raising FC levels will eliminate organics in the water and reduce CC production.

    Word of caution tho, do not try to use CC's as a measure of your FC effectiveness, i.e. "my pool is cloudy and I raised FC, but I am not generating any CC's so it must not be algae." Measurable CC may or may not be formed when FC kills something or it may simply be burning off by sunlight (UV) prior to sampling.

    FC = Good, CC = Bad. Like your case with CC of 1.5, it is telling you that there is something in your water that your FC is fighting necessitating a SLAM - even when your water is otherwise clear!
    16' x 32' (21100 gal), vinyl, 1.5 hp Hayward SuperPump,
    Tagelus TA60/60D Sand Filter, Raypak 399K Digital Heater, TF-100

  7. Back To Top    #7

    Join Date
    Jun 2016
    Location
    Rochester/NY
    Posts
    5

    Re: 1st Test Results with TF100 Kit - What should I do now?

    Wow, very helpful - thank you.

    So are my FC's O.K.? Too Hi?

    I am going to stop using my chlorinator. Should I start to add bleach immediately ow wait until FC's measurement requires additional chlorine?

    What is the sweet spot for FC's?
    24K gal, IG vinyl, Emerson 1hp pump, Hayward S-200 Sand Filter, Hayward automatic chlorinator, Baracuda cleaning robot

  8. Back To Top    #8
    Pool Tool's Avatar
    Join Date
    May 2014
    Location
    Western Chicago Area, IL
    Posts
    754

    Re: 1st Test Results with TF100 Kit - What should I do now?

    Here is the FC sweet spot based on your CYA level. Pool School - Chlorine / CYA Chart

    Wait until you can do the diluted CYA test. It may come back higher, which would definitely necessitate water replacement.

    Provided your CYA stays at 100 ppm, your FC of 11.5 is pretty good. I would prepare to be able to add bleach/chlorine (same thing) within a day. Do not let FC get below 7 or 8 ppm.
    16' x 32' (21100 gal), vinyl, 1.5 hp Hayward SuperPump,
    Tagelus TA60/60D Sand Filter, Raypak 399K Digital Heater, TF-100

Posting Permissions

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