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

Thread: OTO vs. FAS-DPD tests?

  1. Back To Top    #1

    Join Date
    May 2014
    Location
    Burlington, NC
    Posts
    45

    OTO vs. FAS-DPD tests?

    I got the Taylor K-2006 Complete and the K-1000 Basic. After SLAMing for the last week, I am out of the R-0871 titrating reagent for the FAS-DPD chlorine test. Where is the best place to get refills? Is it only available online? Also the Cyaneuric Acid reagent also.

    But what application does the OTO kit have? It doesn't tell me FC only Total Chlorine. What good does that do me? Can I perform the Overnight Loss Test of FC with it or no?

    I think I am through SLAMing because the pool is clear and yesterday the CC was at 0 - 0.5. But I have not done the overnight test yet. I also don't know how to use the Pool Math with an OTO kit with no FC reading.

    Please help me finish getting this pool clear! Thanks.
    18,000 gallon IG vinyl
    Hayward S220T sand filter, replaced sand 2013
    Sta-Rite pump, 1HP?
    New liner, 5/12; pool built in 1981;

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: OTO vs. FAS-DPD tests?

    You can not do an overnight FC loss test with an OTO test. It doesn't have anything close to the precision required. The OTO test is most useful as a simple chlorine/no chlorine check, though it can be used to get a very rough idea of the FC level when CC is not expected to be present (which is most of the time).

    OTO can only really reliably measure a few fairly wide ranges. 0, 0.5, 1.0, 2ish, 3-12, 12-20, 20+. If that is your only choice, and CYA is fairly low you can wait for FC to get low, and then raise it again. That approach is fairly wasteful of chlorine but it can work. If CYA is high and the FC level is staying fairly high the OTO test is essentially useless.

    R-0871 is very occasionally stocked by pool stores, but the great majority of the time you need to order it on-line.
    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
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: OTO vs. FAS-DPD tests?

    Another victim of falling for the cheaper K-2006 only to have to order the FAS-DPD and CYA reagent refills. There is a reason we recommend the TF-100

    As Jason said, they are rarely available locally unless you have a commercial supply house. You can get all the refills you need at tftestkits.net (owned by the owner of this forum).

    How is your filter gauge? They have very nice liquid filled ones for a good price if you are already ordering refills to combine shipping. And of course the SpeedStir is also a great add-on.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  4. Back To Top    #4
    freqz's Avatar
    Join Date
    Sep 2013
    Location
    Dallas, TX
    Posts
    116

    Re: OTO vs. FAS-DPD tests?

    You're unlikely to find the reagents for the FAS-DPD test at your garden variety residential pool store. One of the commercial places *might* have it. Your best bet is probably tftestkits

    http://tftestkits.net/TF-100-Refills-c11/

    If you can beat those prices it won't be by much and he ships fast.

    The OTO test is useful when things are running normally for a daily sanity check of chlorine level. If your water is clear and nothing weird has happened since yesterday FC should be pretty close to CC. After a while you'll learn to anticipate what the test should look like before you start and weather or not you'll need chlorine today You won't be able to do a OCLT with the OTO.
    25000 gal in ground plaster. '79 vintage. Cartridge filter.

  5. Back To Top    #5

    Join Date
    May 2014
    Location
    Turlock, CA
    Posts
    55

    Re: OTO vs. FAS-DPD tests?

    TFTestKits is probably the best place to order reagents, and you shouldn't have to wait too long.

    The OTO TC test is good for daily use by most people as a quick check that you are near your target chlorine level, and more importantly not going below your minimum chlorine level. Provided of course that your CYA is not any higher than about 40 ppm.

    The biggest limitation is that the OTO test only tests to 5 ppm which is too low for SLAMMING, and it cannot tell you what portion of the total chlorine is the bad (combined) kind. You would be best off to order new reagents and keep to the same bleach additions you have been using in the meantime.
    21K gallon, plaster, 1hp Hayward MaxFlo pump, Hayward 244s sand filter, 3/4 hp Halcyon PB4-60Q booster pump, Polaris 280 cleaner.

  6. Back To Top    #6

    Join Date
    May 2014
    Location
    Burlington, NC
    Posts
    45

    Re: OTO vs. FAS-DPD tests?

    jbizzle--I sure thought I had seen the Taylor K-2006 highly recommended on here as THE test kit to have no matter what. Disappointed, of course, to realize now the TF-100 is THE kit to have.

    I also thought the OTO kit was preferred some times but that doesn't really seem to be the case by the responses.

    I will need to order reagents online then. Thanks for all the information.
    18,000 gallon IG vinyl
    Hayward S220T sand filter, replaced sand 2013
    Sta-Rite pump, 1HP?
    New liner, 5/12; pool built in 1981;

  7. Back To Top    #7
    bridgman's Avatar
    Join Date
    Mar 2014
    Location
    Bowmanville, ON Canada
    Posts
    461

    Re: OTO vs. FAS-DPD tests?

    I think the recommendation reads something like "either the K-2006 or the TF-100 are recommended; they use the same reagents (so they are both "THE kit") but the TF-100 includes more of the reagents you will use when practicing TFPC".

    In my case (Canada) the K-2006 was my only option, so I went with that and recently ordered some additional 0871 and 0013 reagents (which aren't very expensive, and even less so from TFT). I'm happy.

    It's also possible that the K-2006 was "THE kit" before the TF-100 was developed, but the internet's long memory failed to recognize that something had changed since then
    Cedar hot tub, 680 US gallons - Snorkel wood-burning heater, canoe paddle, "offline" Intex 1000 GPH pump/filter with skimmer

  8. Back To Top    #8
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: OTO vs. FAS-DPD tests?

    Well, either kit contains the important FAS-DPD test ... the TF-100 just happens to be a better value due to the amount of reagents. Everyone has to order refills eventually You can get larger refills now (although the bottles may not fit in your little blue box).

    The OTO can certainly be helpful as a sanity check, it is much better than the pink matching DPD test which when clear either means you have 0 chlorine or a LOT of chlorine
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  9. Back To Top    #9
    Beens's Avatar
    Join Date
    Jul 2013
    Location
    Virginia Beach, Va
    Posts
    1,171

    Re: OTO vs. FAS-DPD tests?

    Last year when I ran out of dpd powder and the stupid post office lost my refills (!!) that I ordered from TFTestkits.net....I was desperate and did a lot of calling around locally. I managed to find a small local pool store that was able to find it for me. I'm pretty sure she got it from a local supplier because she didn't normally carry it.

    I ended up paying more than I would have from TFTestkits.net but I was desperate and needed it NOW. My point is...with a lot of digging you might be able to find the refills locally but if you know you are going to need them ordering them online is the best bet!

    Oh yeah, I never use my OTO test..lol I like the powder and drops precision!
    18' x 48" (42" water depth) Intex Metal Frame 6,700 Gallons
    Hayward Power-Flo LX 1.0 HP pump
    Hayward Pro Series S166T Sand Filter
    Original Intex Floating Skimmer

  10. Back To Top    #10

    Join Date
    May 2014
    Location
    Burlington, NC
    Posts
    45

    Re: OTO vs. FAS-DPD tests?

    So is TFTestskits a physical store in Creedmoor, NC or only an online store? I could drive there faster than waiting on the mail--even though I now have them on order. It would be good to know for next time.

    Thanks again
    18,000 gallon IG vinyl
    Hayward S220T sand filter, replaced sand 2013
    Sta-Rite pump, 1HP?
    New liner, 5/12; pool built in 1981;

  11. Back To Top    #11
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: OTO vs. FAS-DPD tests?

    Pretty sure it is just an online store ... Unless you track down Dave and Meg's home address

    If you ordered today, you should have them tomorrow.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  12. Back To Top    #12
    26venus's Avatar
    Join Date
    Jul 2013
    Location
    Shenandoah Valley, VA
    Posts
    46

    Re: OTO vs. FAS-DPD tests?

    16 oz. bottle of Taylor R-0871 on Amazon for about $25.00 including shipping

    16 x 36 IG Vinyl, 20,000 gal, chlorine, built 2001
    Hayward 3/4 HP Super Pump
    Hayward Pro Series sand filter S210T
    All in with TFP , testing with tf-100


  13. Back To Top    #13
    svenpup's Avatar
    Join Date
    Nov 2009
    Location
    Sacramento, CA
    Posts
    835

    Re: OTO vs. FAS-DPD tests?

    Bridgman, don't feel too bad about getting the K-2006. No matter what kit you start with you will eventually be purchasing refills. I have the K-2006, but those original reagents are long gone.


    TFP Method Advanced Intermediate
    • 17,500 gallons - In Ground - Plaster - Hayward Swimclear 3020 Cartridge Filter - Sta-Rite Max-E-Glas Main Pump upgraded with A.O. Smith B2980 E-Plus New Centurion Two-Speed Motor - Polaris 280 Cleaner with Polaris PB4-60 Booster Pump - TightWatt2 Timer - Taylor K-2006 Test Kit - Pool Pilot Digital Nano SWCG

    Helpful Links: Pool School, BBB for Beginners, How to Shock (hint...it's a process not a product), Chlorine/CYA Chart, Jason's Pool Calculator

  14. Back To Top    #14

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,084

    Re: OTO vs. FAS-DPD tests?

    mamalou,

    Check your PM's
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  15. Back To Top    #15
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: OTO vs. FAS-DPD tests?

    Quote Originally Posted by 26venus View Post
    16 oz. bottle of Taylor R-0871 on Amazon for about $25.00 including shipping
    Hard to say that this would not go bad before you could use it all ... 2-4 oz per year should be plenty and it may only be good for 2 years.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  16. Back To Top    #16
    freqz's Avatar
    Join Date
    Sep 2013
    Location
    Dallas, TX
    Posts
    116

    Re: OTO vs. FAS-DPD tests?

    Quote Originally Posted by jblizzle View Post
    Hard to say that this would not go bad before you could use it all ... 2-4 oz per year should be plenty and it may only be good for 2 years.
    You'd probably want the 4 oz jug of powder to go along with it too...

    $35!

    http://www.amazon.com/Taylor-Replace...bxgy_lg_text_y

    (I can't imagine how long it would take to work through 113g of the powder...)
    25000 gal in ground plaster. '79 vintage. Cartridge filter.

  17. Back To Top    #17
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: OTO vs. FAS-DPD tests?

    Quote Originally Posted by freqz View Post
    You'd probably want the 4 oz jug of powder to go along with it too...

    $35!

    http://www.amazon.com/Taylor-Replace...bxgy_lg_text_y

    (I can't imagine how long it would take to work through 113g of the powder...)
    At least the powder should last a LOT longer than the liquid ... but neither is worth anything without the other

    This is the Costco mentality ... sure you can save some $ / oz of product, but can you actually USE it all before it goes bad?
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  18. Back To Top    #18
    freqz's Avatar
    Join Date
    Sep 2013
    Location
    Dallas, TX
    Posts
    116

    Re: OTO vs. FAS-DPD tests?

    Quote Originally Posted by jblizzle View Post
    At least the powder should last a LOT longer than the liquid ... but neither is worth anything without the other
    Someone should order that and answer the age old question: "can you use too much DPD powder?"
    25000 gal in ground plaster. '79 vintage. Cartridge filter.

  19. Back To Top    #19

    Join Date
    May 2014
    Location
    Oro Valley, AZ
    Posts
    120

    Re: OTO vs. FAS-DPD tests?

    Quote Originally Posted by svenpup View Post
    Bridgman, don't feel too bad about getting the K-2006. No matter what kit you start with you will eventually be purchasing refills. I have the K-2006, but those original reagents are long gone.
    Yeah you could be like me. I found this site a little late and had already paid $150 for a ColorQ test kit. Then got here and they recommended either the K-2006 or TF-100. I looked on Amazon and found the K-2006 so I ordered it. Then got it and realized it could only do about 6 CYA tests so I ordered the TF-100. So I bought all 3 test kits within a week. I kinda like the toolbox carrying case of the K-2006 so I still use it to carry stuff to/from the pool.
    Thanks,
    Gil

    In-ground: 20,600 gallons; Sand Filter 1HP pump; Kreepy Krauler; Solar Breeze Solar Powered Robotic Skimmer; TFT-100 test kit

  20. Back To Top    #20
    svenpup's Avatar
    Join Date
    Nov 2009
    Location
    Sacramento, CA
    Posts
    835

    Re: OTO vs. FAS-DPD tests?

    We should start little TFP Co-Ops. Order bulk Taylor reagents, boric acid, etc. I thought about this when I recently bought some salt test strips. I only use 1 or 2 out of a tube, and then they go bad.

    Where my sacramento TFP folks at?
    TFP Method Advanced Intermediate
    • 17,500 gallons - In Ground - Plaster - Hayward Swimclear 3020 Cartridge Filter - Sta-Rite Max-E-Glas Main Pump upgraded with A.O. Smith B2980 E-Plus New Centurion Two-Speed Motor - Polaris 280 Cleaner with Polaris PB4-60 Booster Pump - TightWatt2 Timer - Taylor K-2006 Test Kit - Pool Pilot Digital Nano SWCG

    Helpful Links: Pool School, BBB for Beginners, How to Shock (hint...it's a process not a product), Chlorine/CYA Chart, Jason's Pool Calculator

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
  •