Become a TFP Supporter Pool Math Forum Rules Pool School
Page 1 of 2 12 LastLast
Results 1 to 20 of 21

Thread: New to TFP,... Hig CYA and High FC

  1. Back To Top    #1

    Join Date
    Apr 2016
    Location
    Charlotte, NC
    Posts
    8

    New to TFP,... Hig CYA and High FC

    I'm new to TFP and a new pool owner as we recently purchased a home with a 12,000 gallon IG with a Cartridge filter. I want to get off on the right foot and not be reliant on the local pool store so that I can effectively keep the pool balanced and well maintained. That being said I recently took some water samples to the local pool store and got the following results:

    3/26/2016 4/2/2016
    Free Chlorine 7.1 13.4
    Total Chlorine 7.6 16.4
    PH 7.0 7.4
    Total Alkalinity 27 43
    Calcium Hardness 264 293
    Cyanuric Acid 231 205


    After the first sample I was told to shock the pool which I suspect drove the FC up to 13 with a CYA over 200. I'm looking to get some advice as to what I should do (if anything) in order to get the chlorine and CYA levels back to recommended level (told you I was new to this). In any event, I wanted to open it up to the TFP community for any advice/wisdom.

    Thanks,

    Ken
    Ken

    12k gal, IG, Pebbletec, Jandy CV340 Cartridge filter, Zodiac PHPF 1speed1hp
    built 2012, TF100 test kit, Polaris 360

  2. Back To Top    #2
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,994

    Re: New to TFP,... Hig CYA and High FC

    Welcome to TFP!

    Congrats on taking over maintenance on your pool. The first thing you need to maintain your pool is a good test kit. We recommend a Taylor K2006C or a TF100 from TFTestkits.net. That is the one I use.

    Start reading here to learn about maintaining your water, Pool School - ABCs of Pool Water Chemistry

    The only way to lower your CYA is to perform a partial drain and refill on your pool. The good news is that the pool store test results are often wrong, so maybe it isn't that high. Once you get a good test kit and we see your test results we can figure out what to do next.

    How does the water look?
    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

  3. Back To Top    #3

    Join Date
    Apr 2016
    Location
    Charlotte, NC
    Posts
    8

    Re: New to TFP,... Hig CYA and High FC

    Water is very clear, can clearly see the bottom of the pool. I'll order the test kit see what the results are. Thanks
    Ken

    12k gal, IG, Pebbletec, Jandy CV340 Cartridge filter, Zodiac PHPF 1speed1hp
    built 2012, TF100 test kit, Polaris 360

  4. Back To Top    #4
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,994

    Re: New to TFP,... Hig CYA and High FC

    Good deal! Let's keep that water clear. Add about 1/3 of a jug (40oz) of 8.25% concentrated bleach to your pool daily until your test kit arrives. Grocery store generic or big box generic concentrated bleach with no scents and not splashless or easy pour. The rest of your numbers look fine for now.
    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

  5. Back To Top    #5
    Mod Squad kimkats's Avatar
    Join Date
    Jul 2012
    Location
    Tallahassee, FL
    Posts
    26,669

    Re: New to TFP,... Hig CYA and High FC

    Ken, You are already off to a good start in taking care of your own pool in getting a good test kit! THAT and finding TFP will make sure you never get pool stored. SWEET!

    Let us know when the test kit gets there and we will go from there.

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

  6. Back To Top    #6


    TFP Guide

    cowboycasey's Avatar
    Join Date
    Jul 2013
    Location
    Fletcher, OK
    Posts
    3,346

    Re: New to TFP,... Hig CYA and High FC

    welcome, we will get you going
    Pool: Intex 16x32 15000 gal, 2 speed 340042, Pentair CC320 Filter, CircuPool SJ45 Salt System, Intermatic PE653RC; Hot Tub: 650 Gal SWG Megachlor
    links: pool school * Recommended-Levels * SLAM * CYA chart * Test kits * How To Post Pictures * Poolmath * OCLT ** Support your website if we helped you :) **

  7. Back To Top    #7
    Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    12,937

    Re: New to TFP,... Hig CYA and High FC

    Hello Ken. Welcome to TFP. You're in good hands now.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  8. Back To Top    #8
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Location
    Columbia, SC
    Posts
    8,494

    Re: New to TFP,... Hig CYA and High FC

    Welcome to TFP.

    As you start to read in Pool School you will find that your chlorine is actually low right now. If we assume the pool store is even close with their numbers your FC should be maintained in the 16-18 range with CYA over 200. The minimum FC is always 7.5% of your CYA and you should always target a little over that to be safe.

    I started with CYA around 250 and had to maintain FC around 19 all the time.

    As has been pointed out, the only thing you want to use right now is liquid chlorine. Tabs and powdered shock (TriChlor & DiChlor) contain CYA and will drive your stabilizer level even higher.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

  9. Back To Top    #9

    Join Date
    Apr 2016
    Location
    Charlotte, NC
    Posts
    8

    Re: New to TFP,... Hig CYA and High FC

    Ordered the test kit and will start adding the bleach today, what is the best way to add the bleach? Not sure if I should add directly into the skimmer or pour it into pool in front of the return?

    Thanks for the advice.
    Ken

    12k gal, IG, Pebbletec, Jandy CV340 Cartridge filter, Zodiac PHPF 1speed1hp
    built 2012, TF100 test kit, Polaris 360

  10. Back To Top    #10


    TFP Guide

    cowboycasey's Avatar
    Join Date
    Jul 2013
    Location
    Fletcher, OK
    Posts
    3,346

    Re: New to TFP,... Hig CYA and High FC

    Right in front of the return is the way to go
    Pool: Intex 16x32 15000 gal, 2 speed 340042, Pentair CC320 Filter, CircuPool SJ45 Salt System, Intermatic PE653RC; Hot Tub: 650 Gal SWG Megachlor
    links: pool school * Recommended-Levels * SLAM * CYA chart * Test kits * How To Post Pictures * Poolmath * OCLT ** Support your website if we helped you :) **

  11. Back To Top    #11

    Join Date
    Apr 2016
    Location
    Charlotte, NC
    Posts
    8

    Re: New to TFP,... Hig CYA and High FC

    Ok, just got my test kit and got the results below. I had to dilute the CYA with tap water to get the 200 reading, FC and CYA are high but proportionally seem close to being in line with FC about 10% of CYA (I believe this ratio should be about 7-8%). Water is clear and PH appears to be in good shape.

    Please advise as to what my next steps should be.


    Thanks in advance

    Pool Store Pool Store DIY
    3/26/2016 4/2/2016 4/6/2016
    Free Chlorine 7.1 13.4 19.5
    CC -
    Total Chlorine 7.6 16.4 19.5
    PH 7.0 7.4 7.5
    Total Alkalinity 27 43 140.0
    Calcium Hardness 264 293 375.0
    Cyanuric Acid 231 205 200.0




    Ken

    12k gal, IG, Pebbletec, Jandy CV340 Cartridge filter, Zodiac PHPF 1speed1hp
    built 2012, TF100 test kit, Polaris 360

  12. Back To Top    #12


    TFP Guide

    cowboycasey's Avatar
    Join Date
    Jul 2013
    Location
    Fletcher, OK
    Posts
    3,346

    Re: New to TFP,... Hig CYA and High FC

    Al right, we got some numbers

    1 question dealing with the CYA, did you dilute 50% pool and 50% tap? or did you do 33% pool, 66% tap? The reason I ask as you know is the test stops at 100 and if it stopped at 100 again and you say 200 CYA it may be higher than 200.

    now that we know you have CYA of 200 or more maybe, do you plan on taking water out? It looks like you would need to replace about 70% of your water, you could get away with your CYA about 60 to 80 or so.. With splash out, rain, and evaporation you will probably be down to 50 by the end of summer

    Your TA is a little high but that will go down as you keep your PH down with Muriatic acid, how fast does your PH rise?
    Pool: Intex 16x32 15000 gal, 2 speed 340042, Pentair CC320 Filter, CircuPool SJ45 Salt System, Intermatic PE653RC; Hot Tub: 650 Gal SWG Megachlor
    links: pool school * Recommended-Levels * SLAM * CYA chart * Test kits * How To Post Pictures * Poolmath * OCLT ** Support your website if we helped you :) **

  13. Back To Top    #13

    Join Date
    Apr 2016
    Location
    Charlotte, NC
    Posts
    8

    Re: New to TFP,... Hig CYA and High FC

    I diluted 50% pool /50% tap. Not sure as to the question regarding the ph as I,be only been maintaining the pool for a short time and was monitoring with test strips. My first visit to the pool store a couple weeks back resulted in me buying some checials to raise the TA so I assume that is the reason for the elevated numbers(live and learn)

    any potential pitfalls to draining that much water out of the pool
    Ken

    12k gal, IG, Pebbletec, Jandy CV340 Cartridge filter, Zodiac PHPF 1speed1hp
    built 2012, TF100 test kit, Polaris 360

  14. Back To Top    #14


    TFP Guide

    cowboycasey's Avatar
    Join Date
    Jul 2013
    Location
    Fletcher, OK
    Posts
    3,346

    Re: New to TFP,... Hig CYA and High FC

    In your location you will want to know how much ground water you have.. but it is not a good idea to empty your pool.

    most have good luck draining half your water, refilling and draining half again... That is probably the best way to do it, it will use the most water and take longer but you will not be taking all or most of the water out of your pool.

    This will bring your CYA down approximately 75%, that should get you 50 to 60 CYA

    Until you get to know your pool and what it does/needs you will need to test the following daily

    FC
    PH

    Your TA will lower when you add Muriatic acid to drop your PH, as the TA lowers your PH will raise slower.
    Pool: Intex 16x32 15000 gal, 2 speed 340042, Pentair CC320 Filter, CircuPool SJ45 Salt System, Intermatic PE653RC; Hot Tub: 650 Gal SWG Megachlor
    links: pool school * Recommended-Levels * SLAM * CYA chart * Test kits * How To Post Pictures * Poolmath * OCLT ** Support your website if we helped you :) **

  15. Back To Top    #15
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,994

    Re: New to TFP,... Hig CYA and High FC

    Seems like there might be a test error on the TA. Did you wipe the tip after each drop to remove static? Hold the bottle vertically for full drop formation?

    Draining and refilling half the pool shouldn't be an issue.

    Here are some potential problem areas.
    Do you have a deep end? If yes, keep some water level in the shallow end.
    Are you in an area with a high water table? Even if yes it shouldn't be a problem to drain half.
    Are you on city water? If you are on a well adding metals might be a potential issue.

    Otherwise, it is time to lower that CYA to at least under 100.
    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

  16. Back To Top    #16

    Join Date
    Apr 2016
    Location
    Charlotte, NC
    Posts
    8

    Re: New to TFP,... Hig CYA and High FC

    Thanks for the info. deepest part of pool is 5.5 ft. Not sure as to the water table? How would I find out ( i'm in Charlotte NC), and we are on city water. Below are pics of my equipment. What would the process be to drain? Want to make sure I do this properly
    image.jpg
    Thanks again for the guidance
    Attached Images Attached Images
    Ken

    12k gal, IG, Pebbletec, Jandy CV340 Cartridge filter, Zodiac PHPF 1speed1hp
    built 2012, TF100 test kit, Polaris 360

  17. Back To Top    #17
    Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    12,937

    Re: New to TFP,... Hig CYA and High FC

    Ken, that's a very nice set-up. Lots of space and very neat. So, it looks as though your filter has a drain relief at the bottom - a fairly good-sized one compared to my tiny hose spigot. So when you are ready to drain some water, you should be able to extend that blue hose out, open that ball valve at the bottom, and let it flow. Some might say that if you closed or adjusted that 3-way valve going back to the pool (closest one to us on the left in the pic), it may provide more back-pressure to help the drain go out the filter bottom quicker, but I wouldn't worry about rushing it. Just open that filter bottom drain and it should work fine. If you have the pump on high it will definitely flow quicker too.

    As for your water table, you might want to contact your water district or perhaps county environmental office to see if they have any recent water table stats. Even though you may eventually have to turn-over somewhere in the neighborhood of 75% of your water to get the CYA back down to a manageable level, don't feel discouraged if you have to do it in a couple stages. Better to be safe with that pool shell than sorry. Take your time and keep us posted. Lots of folks following your thread.

    - - - Updated - - -

    Oh and Ken, later you may want to try to update your signature with some more specific for us okay? (i.e. type pump, type cleaner(s), any other equipment accessories attached).
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  18. Back To Top    #18
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,994

    Re: New to TFP,... Hig CYA and High FC

    Here is a list of stuff for your signature, Pool School - Read This Before You Post
    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

  19. Back To Top    #19

    Join Date
    Apr 2016
    Location
    Charlotte, NC
    Posts
    8

    Re: New to TFP,... Hig CYA and High FC

    Thanks for the insight. Will try to partially drain and refill this weekend or early next week (expecting rain next couple days). Also want to better understand water table data before I drain. I'll keep everyone informed. Thanks to everyone on this site, I've learned a lot over the past week but still have along way to go.

    also updated my signature.
    Ken

    12k gal, IG, Pebbletec, Jandy CV340 Cartridge filter, Zodiac PHPF 1speed1hp
    built 2012, TF100 test kit, Polaris 360

  20. Back To Top    #20

    Join Date
    Apr 2016
    Location
    Charlotte, NC
    Posts
    8

    Re: New to TFP,... Hig CYA and High FC

    Ok so I drained and refilled about 25%-30% over the weekend with the following results:

    Before After

    FC 19 13
    TC 19 13
    PH 7.5 7.5
    TA 140 110
    CH 375 275
    CYA 210 150

    Results were as expected with my results decreasing proportionally to the water removed. Water still is very clear. My plan is to take another 25% out and refill next weekend.
    Ken

    12k gal, IG, Pebbletec, Jandy CV340 Cartridge filter, Zodiac PHPF 1speed1hp
    built 2012, TF100 test kit, Polaris 360

Page 1 of 2 12 LastLast

Posting Permissions

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