Become a TFP Supporter Pool Math Forum Rules Pool School
Page 1 of 2 12 LastLast
Results 1 to 20 of 27

Thread: New TFTest kit owner Please help!

  1. Back To Top    #1

    Join Date
    May 2015
    Location
    Cincinnati/ohio
    Posts
    30

    New TFTest kit owner Please help!

    After becoming extremely frustrated with the local pool store (got sold on the phosphate issue) I purchased the TF-100 test kit and decided to educate myself. It arrived in the mail and the morning I was going to test my water one of our landscapers crew dropped a wheelbarrow full of topsoil in our pool! We have spent the last 3 days vacuuming to waste and filtering/backwashing. We are now able to see the bottom slightly so I decided to use my test kit.

    Here are my readings...

    FC 24 ppm
    CC 1.5 ppm
    CYA 55
    pH 8.2
    TA 160

    After opening our pool this season we were not able to keep chlorine in our pool and were sold on the phosphate issue.. (I now believe it was due to low stabilizer) So we added chlorine per pool store instructions. After retesting we were told our level was at 10 ppm 2 weeks ago. We thought after our landscaping incident and backwashing so often we would be severely low on chlorine so we added more last night. Now my reading is off the chart high! We will be continuing to backwash as we deal with this problem and so hoping it will go down.

    Should I turn off or turn down my swg so it's not making more chlorine?
    Should I add the muriatic acid per pool math even though we will be losing some of it with future backwashing??
    18K gallons Vinyl IG, SWG, Sand filter, installation completed 5/2013
    TF-100 test kit user

  2. Back To Top    #2
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Location
    Columbia, SC
    Posts
    8,495

    Re: New TFTest kit owner Please help!

    When FC is above 10 the pH test reads high, so at this point you can't get a test to verify where you really are.

    24 is actually your shock level, so it is really not that high.

    If it were me I would be vacuuming to waste to get all of the trash off the floor of the pool and then SLAM the pool to clear it up.
    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

  3. Back To Top    #3

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,078

    Re: New TFTest kit owner Please help!

    Confirming what Tim has said, you are actually in good shape. You have attained SLAM value for FC so just keep the FC right where it is until your pool is crystal clear.

    Brushing, vacuuming and filtering will be your biggest project.

    When you have finished the SLAM (it's a process, not a one time event) I think you will find you can let your FC drift down to about 4-5 ppm and the rest of your numbers will be in very good shape as will your pool water.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  4. Back To Top    #4
    poolnoob.ca's Avatar
    Join Date
    May 2014
    Location
    Georgetown, ON, Canada
    Posts
    277

    Re: New TFTest kit owner Please help!

    Yes I would say you can turn off swg until Chlorine is at the level you want, then restart
    32,000L Fibreglass Leisure Pools IG 12.5'x23'x5' Pump: AstralPools BX1 1.0HP
    Filter: AstralPools ZX-310 SWCG: AstralPools VX7T
    Heater: Hayward H250FDN Test Kit: TF-100

  5. Back To Top    #5

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,078

    Re: New TFTest kit owner Please help!

    Yes I would say you can turn off swg until Chlorine is at the level you want, then restart
    Not exactly. You must continue to ADD chlorine to keep your FC level at 24. Whether you do that manually or with the SWG (manually is better) it is imperative your FC stay at 24 until your pool is crystal clear and the SLAM is complete.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  6. Back To Top    #6
    poolnoob.ca's Avatar
    Join Date
    May 2014
    Location
    Georgetown, ON, Canada
    Posts
    277

    Re: New TFTest kit owner Please help!

    Quote Originally Posted by duraleigh View Post
    Not exactly. You must continue to ADD chlorine to keep your FC level at 24. Whether you do that manually or with the SWG (manually is better) it is imperative your FC stay at 24 until your pool is crystal clear and the SLAM is complete.
    True, sorry i didnt realize he was in slam mode!
    32,000L Fibreglass Leisure Pools IG 12.5'x23'x5' Pump: AstralPools BX1 1.0HP
    Filter: AstralPools ZX-310 SWCG: AstralPools VX7T
    Heater: Hayward H250FDN Test Kit: TF-100

  7. Back To Top    #7

    Join Date
    May 2015
    Location
    Cincinnati/ohio
    Posts
    30

    Re: New TFTest kit owner Please help!

    Thanks so much! I didn't realize before more research that I was at SLAM level however, prior to getting any responses I turned off the generator and like you said have been brushing, vacuuming and filtering. It is much improved but very cloudy. Test results this evening are as follows:

    FC 16
    CC 1
    pH 7.8
    TA 130
    CH 275
    CYA 40

    Obviously I am no longer at SLAM level so what is my next step? Should we leave the swg off and manually add chlorine? If so how much? What about CYA? Should I add that as well?
    18K gallons Vinyl IG, SWG, Sand filter, installation completed 5/2013
    TF-100 test kit user

  8. Back To Top    #8
    Defgufman's Avatar
    Join Date
    Mar 2015
    Location
    Savannah GA
    Posts
    577

    Re: New TFTest kit owner Please help!

    Yep add liquid chlorine or bleach to keep it at SLAM level
    Inground 13,200 gal Vinyl, Pentair 3/4 hp pump, Pentair Sand Dollar filter, Polaris 280

    Pool School, Pool Math, CYA to FC ratio chart, Testing Kits

  9. Back To Top    #9
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: New TFTest kit owner Please help!

    Quote Originally Posted by Snoufette View Post
    Thanks so much! I didn't realize before more research that I was at SLAM level however, prior to getting any responses I turned off the generator and like you said have been brushing, vacuuming and filtering. It is much improved but very cloudy. Test results this evening are as follows:

    FC 16
    CC 1
    pH 7.8
    TA 130
    CH 275
    CYA 40

    Obviously I am no longer at SLAM level so what is my next step? Should we leave the swg off and manually add chlorine? If so how much? What about CYA? Should I add that as well?
    Well, actually, you are at SLAM level. 16 FC is shock level for 40 CYA.

    Something does not compute. Did you replace a whole bunch of water since the first test? CYA doesn't drop 30% overnight by itself. One of your tests is wrong. It's the hardest test to do, and there's no shame in pouring the sample back and forth and reading it ten times or more. As long as you start consistently hitting within about 5 of each other, you're probably there. Use the highest number of the group as your CYA.

    Be certain of that CYA, and then raise FC up to shock level again. Don't mess with anything but adding bleach until the pool passes all three tests to end the SLAM. The rest can be fine tuned in a couple hours no matter how far out of whack. Just get that pool crystal clear.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  10. Back To Top    #10

    Join Date
    May 2015
    Location
    Cincinnati/ohio
    Posts
    30

    Re: New TFTest kit owner Please help!

    The CYA test is definitely the most difficult!!! I believe my result of 40 is probably the most accurate. It was at 90 (according to the pool store) 3 weeks ago. I was getting ready to test it using my TFTest kit when our "dirt incident" happened. We have replaced A LOT of water since then so I am assuming it has dropped quite a bit. Not sure if we should have but my husband added 4 pounds of CYA this evening (recommended amount was 6 pounds but we started small just in case). Problem is now I have no idea how much chlorine to add to stay at SLAM level and understand that my CYA will not show up for a few days.
    18K gallons Vinyl IG, SWG, Sand filter, installation completed 5/2013
    TF-100 test kit user

  11. Back To Top    #11
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Location
    Columbia, SC
    Posts
    8,495

    Re: New TFTest kit owner Please help!

    Quote Originally Posted by Snoufette View Post
    The CYA test is definitely the most difficult!!! I believe my result of 40 is probably the most accurate. It was at 90 (according to the pool store) 3 weeks ago. I was getting ready to test it using my TFTest kit when our "dirt incident" happened. We have replaced A LOT of water since then so I am assuming it has dropped quite a bit. Not sure if we should have but my husband added 4 pounds of CYA this evening (recommended amount was 6 pounds but we started small just in case). Problem is now I have no idea how much chlorine to add to stay at SLAM level and understand that my CYA will not show up for a few days.
    Did he just dump it in, or in a sock that maybe you can pull out??
    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

  12. Back To Top    #12

    Join Date
    May 2015
    Location
    Cincinnati/ohio
    Posts
    30

    Re: New TFTest kit owner Please help!

    I had never even heard of a sock until this website.
    He put it slowly in the skimmer like we've been told to do by the pool store..... Really wish I had found this website prior to installing our pool. Live and learn.
    18K gallons Vinyl IG, SWG, Sand filter, installation completed 5/2013
    TF-100 test kit user

  13. Back To Top    #13
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Location
    Columbia, SC
    Posts
    8,495

    Re: New TFTest kit owner Please help!

    Quote Originally Posted by Snoufette View Post
    I had never even heard of a sock until this website.
    He put it slowly in the skimmer like we've been told to do by the pool store..... Really wish I had found this website prior to installing our pool. Live and learn.
    Well, you could backwash now because most of the CYA is probably sitting on top of the sand, but that would wast it. But, now you will need more bleach to clear up your pool because your shock level just went up. You had 40 CYA before, and what you just added will raise it anther 27 (not sure where you figured 6 pounds) so as of tomorrow morning you must shock at 28ppm FC.
    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

  14. Back To Top    #14

    Join Date
    May 2015
    Location
    Cincinnati/ohio
    Posts
    30

    Re: New TFTest kit owner Please help!

    The 6 pounds was calculated by using a chart in my pool manual. Inaccurate I'm assuming by your response but like I said I just now have figured out this website. Unfortunately I think I am in a sticky situation until I can get more accurate results. I realize the stabilizer addition was a dumb move but its over now. I hate to add chlorine to 28 ppm when I know I will be continuing to backwash to clean this topsoil out of my pool, which will then lower my cya level and yet it is too soon to get an accurate cya reading. correct?
    Guess I'll just wait it out and hope nothing goes terribly wrong... I appreciate all of your responses.
    18K gallons Vinyl IG, SWG, Sand filter, installation completed 5/2013
    TF-100 test kit user

  15. Back To Top    #15
    ship of fools's Avatar
    Join Date
    Nov 2011
    Location
    Albany, NY
    Posts
    495

    Re: New TFTest kit owner Please help!

    Quote Originally Posted by Snoufette View Post
    The 6 pounds was calculated by using a chart in my pool manual. Inaccurate I'm assuming by your response but like I said I just now have figured out this website. Unfortunately I think I am in a sticky situation until I can get more accurate results. I realize the stabilizer addition was a dumb move but its over now. I hate to add chlorine to 28 ppm when I know I will be continuing to backwash to clean this topsoil out of my pool, which will then lower my cya level and yet it is too soon to get an accurate cya reading. correct?
    Guess I'll just wait it out and hope nothing goes terribly wrong... I appreciate all of your responses.
    With a SWG a CYA level of 40 + 27 is just about right!
    21,000 gallon inground
    Haywood Sand Filter
    Vinyl Liner

  16. Back To Top    #16

    Join Date
    May 2015
    Location
    Cincinnati/ohio
    Posts
    30

    Re: New TFTest kit owner Please help!

    Thanks Dave! Unfortunately I wasn't educated enough yesterday evening and we added CYA because I thought it was low based on having and swg.... whats done is done. Based on pool math calculations and Tim's calculation of what 4 lbs of cya did to my level we added chlorine last night to get us up to shock level. This morning at 6:30 am I am at 30 ppm if I'm testing correctly. My concern at this point is I don't really know what my cya level is and I also know that I will need to backwash again because I'm still vacuuming dirt. What should be my main goal at this point? Should I leave swg off also?
    18K gallons Vinyl IG, SWG, Sand filter, installation completed 5/2013
    TF-100 test kit user

  17. Back To Top    #17
    Defgufman's Avatar
    Join Date
    Mar 2015
    Location
    Savannah GA
    Posts
    577

    Re: New TFTest kit owner Please help!

    I would turn off the swg during slam to save the cell from working so hard. Just use regular unscented bleach, not splashless. If it doesn't say 8.25% don't buy it.
    Inground 13,200 gal Vinyl, Pentair 3/4 hp pump, Pentair Sand Dollar filter, Polaris 280

    Pool School, Pool Math, CYA to FC ratio chart, Testing Kits

  18. Back To Top    #18
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Location
    Columbia, SC
    Posts
    8,495

    Re: New TFTest kit owner Please help!

    Quote Originally Posted by ship of fools View Post
    With a SWG a CYA level of 40 + 27 is just about right!
    It would be right for normal maintenance. During a SLAM we recommend it lower, preferably closer to 30.
    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

  19. Back To Top    #19
    ship of fools's Avatar
    Join Date
    Nov 2011
    Location
    Albany, NY
    Posts
    495

    Re: New TFTest kit owner Please help!

    Quote Originally Posted by tim5055 View Post
    It would be right for normal maintenance. During a SLAM we recommend it lower, preferably closer to 30.
    Sure .... i guess my point was that it wasn't a major screwup.
    21,000 gallon inground
    Haywood Sand Filter
    Vinyl Liner

  20. Back To Top    #20
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Location
    Columbia, SC
    Posts
    8,495

    Re: New TFTest kit owner Please help!

    Quote Originally Posted by Defgufman View Post
    I would turn off the swg during slam to save the cell from working so hard. Just use regular unscented bleach, not splashless. If it doesn't say 8.25% don't buy it.
    Agreed.

    Use 70 at the CYA level for your SLAM. Backwash when you need to and don't bother testing CYA for at least a week.

    You will find that on the internet and in printed materials many differing suggestions on how to maintaining your pool and what chemicals to use and in what quantities. Mixing and matching from different sources can be problematic.
    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

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
  •