Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 15 of 15

Thread: Test Results and a question (OF COURSE)

  1. Back To Top    #1

    Join Date
    May 2008
    Location
    Louisville,KY
    Posts
    57

    Test Results and a question (OF COURSE)

    Just got the tf-100 from the delivery man (OH-YEAH!!). Awesome kit.

    Here are the results
    chlorine results from drop test
    FC 2.5
    CC 1.0
    TC 3.5
    PH 7.2
    TA 90
    CH 160 VINYL POOL
    CYA <30 1/4 inch below 30 mark
    Water temp. 80
    Now to the question. I have some 3" tabs of trichloro-s triazinetrione left over from last season. Can these be used to increase CYA levels to 50. I think that I am going to have to run this pool at at least this level to keep chlorine in it. I have been putting at least a gallon a day in the pool, and about every third day I put in 2. This pool faces east-west and gets full sun all day. No buildings or trees to block the sun. Even on the days when I add 2 gallons the chlorine level never shoots up over 3 or 4, and is back at 2 the next day. I was putting a lot of fresh water in due to a leak, probably 5000 gallons this season, but have not done this in over a week. The pool turned cloudy over the weekend due to high bather load. I put about 1.5 lbs. of 73% cal-hypo in Sunday night along with 4 ozs. of enhancer, and pool cleared up the next day. If it is possible to use the pucks, does anyone know the amount of CYA this will add per puck? Should I just go ahead and buy some sanitizer and be done with it?
    16x32 IG vinyl
    24000 gallons
    Hayward super pump 1.5HP
    Hayward Pro Series Filter S244T
    3 returns, bottom drain, skimmer

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887
    If the CYA test was below the 30 mark then the CYA level is between 30 and 40, since 40 is below 30.

    Calling CYA 35, you need to maintain FC at between 3 and 7, and never below 3. Your FC level is too low, which is probably why you have CC of 1. Bring the FC level up to about 7 and the CC level will probably start to go down. If CC isn't below 1.0 tomorrow you may need to shock the pool.

    Yes, you can use trichlor tablets to raise the CYA level, but it will take some time. Trichlor tablets come in various sizes. A 7 oz tablet will raise CYA by 1.2 in 24,000 gallons. Remember that trichlor is acidic, so you will need to keep an eye on the PH while you are using them.
    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

    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    28,414

    Re: Test Results and a question (OF COURSE)

    Should I just go ahead and buy some sanitizer and be done with it?
    The short answer is to maybe do both. roughly 1/3 of the weight of the pucks is stabilizer so you can do that math and figure it's gonna take the pucks a long time to get your stabilizer to make a big move. I'd buy enough to get me to 40ppm and then use the pucks to move it to 50 or so.

    Uh-oh! YOu need to shock that pool! Your test result of 1.0 CC's indicate you still have a ways to go to clear the pool completely. I would bring the FC up to around 20 one time and then let it drift back down to normal. I bet your CC's will be down to .5 or less in 24 hours.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  4. Back To Top    #4

    Join Date
    May 2008
    Location
    Louisville,KY
    Posts
    57
    Oops! Actually the water level in the tube was 1/4 inch above the 30 mark. I am keeping a close eye on the PH. I went ahead and put 5 of the 3" pucks in on Sunday, as I had a good idea that my CYA level was going to come in low just by seeing just how much chlorine the pool was using. That small amount caused a slight drop in PH. Raised it back up with Borax. Should I go ahead and raise PH levels in pool, in anticipation of the stabilizer lowering it? I am only looking at putting in about 38 ounces of stabilizer according to the pool calculator. I think I will follow Dave's advice and bring up to 40 with stabilizer and the rest with pucks. Jason, is it safe to assume that my 3" pucks are 7 ozs? Ther is no identifying numbers on bucket, other than a total weight of 40 lbs. they say Pool Brand on bucket, and were purchased at Sams Club. Thanks for the info guys.
    16x32 IG vinyl
    24000 gallons
    Hayward super pump 1.5HP
    Hayward Pro Series Filter S244T
    3 returns, bottom drain, skimmer

  5. Back To Top    #5

    Join Date
    May 2008
    Location
    Louisville,KY
    Posts
    57
    Dave, Would it be okay to shock with 73% cal-hypo? I am trying to use this **** up and go to strictly bbb, but I cant get over seeing these d#@* buckets of wasted money sitting here collecting dust. I know the trichloro pucks are going to be useless when CYA gets to the level I am going to run at. I just have a feeling this pool is going to need to run at a higher CYA level due to full sun and bather load
    16x32 IG vinyl
    24000 gallons
    Hayward super pump 1.5HP
    Hayward Pro Series Filter S244T
    3 returns, bottom drain, skimmer

  6. Back To Top    #6

    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    28,414
    Dave, Would it be okay to shock with 73% cal-hypo?
    Absolutely. Use it up. Daily use OK, too.

    Test your CH every now and then to keep it less than say 300 or so.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  7. Back To Top    #7

    Join Date
    May 2008
    Location
    Louisville,KY
    Posts
    57
    Do you all think that it is ok to add 77 ozs. of cal-hypo in one shot. I am using power powder plus and the product says 73% cal-hypo and 27% other ingredients. That concerns me. According to calculator I need to get level up to 20 to be at shock level. That calls for 77 ozs. of cal-hypo. I will be dissolving in 3 gallons of water and broadcasting around perimeter.
    16x32 IG vinyl
    24000 gallons
    Hayward super pump 1.5HP
    Hayward Pro Series Filter S244T
    3 returns, bottom drain, skimmer

  8. Back To Top    #8
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887
    That sounds like a good plan. Chlorine is the only chemical you want to add all at once. With all of the other chemicals it is best to sneak up on your target value in several steps. But chlorine needs to go up to it's full level right away to be fully effective.
    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

  9. Back To Top    #9

    Join Date
    May 2008
    Location
    Louisville,KY
    Posts
    57
    So putting it all in at once will not damage a vinyl liner. The pump will be running for the next 24 hrs.
    16x32 IG vinyl
    24000 gallons
    Hayward super pump 1.5HP
    Hayward Pro Series Filter S244T
    3 returns, bottom drain, skimmer

  10. Back To Top    #10
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887
    The liner is safe up to a couple of times shock level. The key thing is to not spill full strength bleach directly on the liner. Pour the dissolved cal-hypo slowly into the water in front of a return, or distribute it evenly around the pool, and leave the pump running for an hour afterwards and you will be fine.
    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

  11. Back To Top    #11

    Join Date
    May 2008
    Location
    Louisville,KY
    Posts
    57
    OK, took the advice and got the pool up to 20 ppm with cal hypo last night. I just now had an opportunity to check levels.

    FC 6.5
    CC .5
    TC 7.0
    When I put the R-003 in the sample barely shaded to pink. This tells me that the CC level is almost zero, correct? I had put about 6 trichloro pucks in the auto-chlor on Sunday, and it increased the CYA level from approx. 28 to approx 32 with some of the puck remaining. Does anyone have any estimations of how much CYA is actually in a 3" puck. I was just going to continue to test CYA daily until pucks were consumed, but I did not want to use up all the chemicals that way. Can I expect any increase in CYA levels once the pucks are gone?
    16x32 IG vinyl
    24000 gallons
    Hayward super pump 1.5HP
    Hayward Pro Series Filter S244T
    3 returns, bottom drain, skimmer

  12. Back To Top    #12

    Join Date
    Jun 2007
    Location
    SF Bay Area
    Posts
    441
    tnewton7,

    Can I expect any increase in CYA levels once the pucks are gone?
    Maybe a little. Dissolved CYA can take up to week to show up in the CYA test.

    Just remember that it is FAR easier to add more CYA if you are a little low than to have to remove CYA if your levels are too high.

    Titanium
    24,000 gallon inground freeform pool/spa circa 1983 (113 ft perimeter, 625 sq ft) with 350 gallon attached spill-over spa
    2007 2 HP, three-phase Hayward TriStar pump which is powered by an Ikeric VS-200 variable speed drive system
    1983 Laars XE Pool/Spa Heater Type ES 400,000 BTU, 1998 Hayward Super Star-Clear C-4000 cartridge filter (400 sq ft, 4 separate cartridges)
    1998 Polaris 380 pressure-side cleaner w/ 3/4 HP booster pump
    One skimmer :( and one PoolSkim :), One Supervision Galaxy LED pool lamp, Second story solar panels
    Hayward/GoldLine AquaLogic PS4 (replaced 1983 vintage dual circuit Intermatic timer)

  13. Back To Top    #13
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887
    You can use the Effects of adding chemicals section of my Pool Calculator, see the link in my signature, to figure out how much CYA various amounts of trichlor tablets add to your pool.
    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

  14. Back To Top    #14

    Join Date
    May 2008
    Location
    Louisville,KY
    Posts
    57
    Thanks Jason. I did not even see trichlor on the dropdown there. I guess it is safe to assume that one trichlor puck is the same as the other chemical content wise, the only difference being the weight?
    16x32 IG vinyl
    24000 gallons
    Hayward super pump 1.5HP
    Hayward Pro Series Filter S244T
    3 returns, bottom drain, skimmer

  15. Back To Top    #15
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887
    Trichlor is on the popup list just below 12.5% bleach. The tablets vary in size. 7 oz is fairly common, but they come in a number of sizes from 1 oz to 40+ oz.
    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

Posting Permissions

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