Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 14 of 14

Thread: Help with tf100 test results after draining pool

  1. Back To Top    #1
    FirstVallartaPool's Avatar
    Join Date
    Apr 2016
    Location
    Puerto Vallarta mexico
    Posts
    109

    Help with tf100 test results after draining pool

    After draining half the pool due to high cya here are the new results. Any input most welcomed. Water is pretty good but not crystal. I still have yet to deep clean the sand filter. By my calculations I ca turn pool water over in an hour and I am running sand filter for 3 hours and some days 7 but still not crystal clear but again not bad. Thanks all.
    Edit. I just pretested FC this am and at 7 now from yesterday [9.5]

    TA 110
    Ph 7.2
    Ch 175
    Fc 7
    CC .5
    Tc 10
    Cya 38-40 yay [was 80]
    Pool 3800 gaĺlon glass tiled concrete approximately 10 years old/ Puerto Vallarta
    Hayward sand filter S166t.
    Pool Pump Silver10/1115 1hp
    Heat siphon Sx3.25hp
    Hard Municipal Water tf-100 test kit

  2. Back To Top    #2

    TFP Guide
    Mr Bruce's Avatar
    Join Date
    Mar 2014
    Location
    Greenville, SC
    Posts
    1,798

    Re: Help with tf100 test results after draining pool

    Looks pretty good. You want that CH a little higher than that. Yes, a deep clean will help a lot if you haven't done that before. After the deep clean, don't backwash until you get to 25% over post backwash PSI.

    FWIW, my pool is crystal clear and I run the pump 4 hours a day. With a "good but not crystal" pool you might consider running it a bit longer until it clears up.
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
    Test Kits - Pool Math - Chlorine/CYA/Target/Slam Chart

  3. Back To Top    #3
    Pool Tool's Avatar
    Join Date
    May 2014
    Location
    Western Chicago Area, IL
    Posts
    754

    Re: Help with tf100 test results after draining pool

    Results look great (I assume a good test kit), though I don't see a TA reading. Good choice to drain and refill to make it more manageable. Since your pool is still a little cloudy, I would suggest raising your FC to ~16 ppm throughout the day today and then conducting an OCLT tonight if possible. That will give you indication if algae or just junk in the water. Depending on the OCLT results, you can continue the Slam or not (provided understanding that clear water is a condition to meet successful slam).

    At a minimum, you should run your pump more or 24/7 to help clear the water.
    16' x 32' (21100 gal), vinyl, 1.5 hp Hayward SuperPump,
    Tagelus TA60/60D Sand Filter, Raypak 399K Digital Heater, TF-100

  4. Back To Top    #4
    FirstVallartaPool's Avatar
    Join Date
    Apr 2016
    Location
    Puerto Vallarta mexico
    Posts
    109

    Re: Help with tf100 test results after draining pool

    OK great thanks. So you think I should raise fc from current 7 to 16? I'm just reading about oclt test now! Test kit is tf100. Ta is110
    Pool 3800 gaĺlon glass tiled concrete approximately 10 years old/ Puerto Vallarta
    Hayward sand filter S166t.
    Pool Pump Silver10/1115 1hp
    Heat siphon Sx3.25hp
    Hard Municipal Water tf-100 test kit

  5. Back To Top    #5
    Pool Tool's Avatar
    Join Date
    May 2014
    Location
    Western Chicago Area, IL
    Posts
    754

    Re: Help with tf100 test results after draining pool

    Yes, would raise it today then do the OCLT tonight. Basically the test will prove if you have any algae growing in your pool causing the cloudiness. It is done at night so UV light from the sun doesn't affect your FC levels, so any loss in FC can only be caused by organics in the water. If you rule out algae then you can focus on clearing the dust or whatever from the water. If you find that you have algae no amount of filtration will clear it. It can only be cleared up after killing all the algae via a Slam.

    Good luck, read up and feel free to post any questions!

    BTW, TA looks good.
    16' x 32' (21100 gal), vinyl, 1.5 hp Hayward SuperPump,
    Tagelus TA60/60D Sand Filter, Raypak 399K Digital Heater, TF-100

  6. Back To Top    #6
    FirstVallartaPool's Avatar
    Join Date
    Apr 2016
    Location
    Puerto Vallarta mexico
    Posts
    109

    Re: Help with tf100 test results after draining pool

    So by poolmath its telling me to ad 250 ounces by volume of Cal hypo 65% [which is what I am guessing I'm working with inherited pool]. So I did that will test after sunset then again in morning before sun hits pool. I will post results here.
    Thanks to everyone. I love this forum!
    Pool 3800 gaĺlon glass tiled concrete approximately 10 years old/ Puerto Vallarta
    Hayward sand filter S166t.
    Pool Pump Silver10/1115 1hp
    Heat siphon Sx3.25hp
    Hard Municipal Water tf-100 test kit

  7. Back To Top    #7
    Pool Tool's Avatar
    Join Date
    May 2014
    Location
    Western Chicago Area, IL
    Posts
    754

    Re: Help with tf100 test results after draining pool

    Try to make sure that the Cal-Hypo is all dissolved today. Anything left to dissolve after your FC test tonight will skew your OCLT results. I think you will be fine since I think that is fast dissolving, but I am not positive as I have never used it. My assumption was you would be using bleach but since you need CH anyway that is a good choice! Best of luck to you!
    16' x 32' (21100 gal), vinyl, 1.5 hp Hayward SuperPump,
    Tagelus TA60/60D Sand Filter, Raypak 399K Digital Heater, TF-100

  8. Back To Top    #8
    FirstVallartaPool's Avatar
    Join Date
    Apr 2016
    Location
    Puerto Vallarta mexico
    Posts
    109

    Re: Help with tf100 test results after draining pool

    One question...my wife wants to know if she can go for a swim right now...safe? ...Or tell her to hit the beach?
    Pool 3800 gaĺlon glass tiled concrete approximately 10 years old/ Puerto Vallarta
    Hayward sand filter S166t.
    Pool Pump Silver10/1115 1hp
    Heat siphon Sx3.25hp
    Hard Municipal Water tf-100 test kit

  9. Back To Top    #9


    TFP Guide
    jeffchap's Avatar
    Join Date
    Jun 2012
    Location
    Edmond OK
    Posts
    1,373

    Re: Help with tf100 test results after draining pool

    It is safe to swim with FC up to SLAM level - 16 in your case.
    25000 gallon free-form gunite
    Jandy Stealth pump/CL340 cartridge filter
    Pentair IC40 SWG
    Pentair MasterTemp 250HD heater
    Jandy AquaLink RS automation

  10. Back To Top    #10
    FirstVallartaPool's Avatar
    Join Date
    Apr 2016
    Location
    Puerto Vallarta mexico
    Posts
    109

    Re: Help with tf100 test results after draining pool

    Great thanks!
    Pool 3800 gaĺlon glass tiled concrete approximately 10 years old/ Puerto Vallarta
    Hayward sand filter S166t.
    Pool Pump Silver10/1115 1hp
    Heat siphon Sx3.25hp
    Hard Municipal Water tf-100 test kit

  11. Back To Top    #11
    FirstVallartaPool's Avatar
    Join Date
    Apr 2016
    Location
    Puerto Vallarta mexico
    Posts
    109

    Re: Help with tf100 test results after draining pool

    Ok just tested water pre sun. Last night FC 17. CC. 5
    This morning. FC 23 CC. 5
    I added the chlorine at about 1pm yesterday and tested at 8pm. Took morning reading at 830am. I am assuming chlorine powder didn't fully dissolve even by 8pm?
    So can I assume though algae isn't eating the chlorine at least or do I need to Re oclt? Also I ran filter for approximately 8 hours and water still not super clear.
    Pool 3800 gaĺlon glass tiled concrete approximately 10 years old/ Puerto Vallarta
    Hayward sand filter S166t.
    Pool Pump Silver10/1115 1hp
    Heat siphon Sx3.25hp
    Hard Municipal Water tf-100 test kit

  12. Back To Top    #12

    TFP Guide
    Mr Bruce's Avatar
    Join Date
    Mar 2014
    Location
    Greenville, SC
    Posts
    1,798

    Re: Help with tf100 test results after draining pool

    Something's not right. If I put 4800 gallons in PoolMath, it tells me that 250oz of 65% Cal-Hypo will raise FC 251.

    Maybe I need another caffeine.
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
    Test Kits - Pool Math - Chlorine/CYA/Target/Slam Chart

  13. Back To Top    #13
    Pool Tool's Avatar
    Join Date
    May 2014
    Location
    Western Chicago Area, IL
    Posts
    754

    Re: Help with tf100 test results after draining pool

    Yes, me too...and plenty of caffeine streaming now. I didn't notice that on taptalk.

    I am hoping he mistakenly typed ounces but is using that archaic metric system and meant 250 ml's (~8.5 ozs).
    16' x 32' (21100 gal), vinyl, 1.5 hp Hayward SuperPump,
    Tagelus TA60/60D Sand Filter, Raypak 399K Digital Heater, TF-100

  14. Back To Top    #14
    FirstVallartaPool's Avatar
    Join Date
    Apr 2016
    Location
    Puerto Vallarta mexico
    Posts
    109

    Re: Help with tf100 test results after draining pool

    Ok just tested water pre sun. Last night FC 17. CC. 5
    This morning. FC 10.5 CC. 5
    I added the chlorine at about 1pm yesterday and tested at 8pm. Took morning reading at 830am. So algae is my problem Re oclt? Next step? Yikes!
    Pool 3800 gaĺlon glass tiled concrete approximately 10 years old/ Puerto Vallarta
    Hayward sand filter S166t.
    Pool Pump Silver10/1115 1hp
    Heat siphon Sx3.25hp
    Hard Municipal Water tf-100 test kit

Posting Permissions

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