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

Thread: New pool, algae, numbers...

  1. Back To Top    #1

    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    14

    New pool, algae, numbers...

    Been reading here for about a month now. I just got the TF-100 test kit after battling with my sound round of green pool. I was using the strips and a standard kit that just test chlorine and ph. Here is my info. And my questions to follow. Any help would be appreciated.

    CL = 5+ (deep yellow almost a tint of brown)
    PH = 7.5
    FC = 6.5
    CC = 1.0
    TC = 7.5
    TA = 120
    CH = 260
    CYA = < 20

    I have a 24' round above ground. The pool calc says 13500 gallons. I added 48 oz. by weight of stabilzer (calc said 56 oz). My pool today is cloudy, a grayish cloudy, not white or green. The past 2 days I have been vacuuming it 2 times each day. If you sweep it with the brush, a green cloud will appear. It has gotten much better. Before when I was using strips to test, I had about the same numbers as the TF100 kit is showing, but I got algae again. I assume my CYA was causing me to loose my FC. Is this correct? I have being using Walmart 6% bleach to bring the chlorine levels back up every couple days. I assume I am close to the point of just maintaining. Any suggestions? Thanks.
    24' AG, 13.5k gal, Sand filter, 1.5 hp pump.

  2. Back To Top    #2

    Join Date
    Aug 2010
    Location
    Dallas, TX
    Posts
    4,052

    Re: New pool, algae, numbers...

    If you have algae in the pool, which it sounds like you do, it will be almost impossible to keep FC in the pool. Don't add anymore CYA at the moment, it's time to start the shock process.
    pool-school/shocking_your_pool
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
    If TFP has helped you, please click to SUPPORT TFP!

  3. Back To Top    #3
    UnderWaterVanya's Avatar
    Join Date
    Jun 2012
    Location
    Mint Hill, NC
    Posts
    2,589

    Re: New pool, algae, numbers...

    Also - after you are done shocking - when dosing the pool, bleach generally is needed daily not every other day. I have the same size pool (different shape) and I have to add bleach daily to stay under the max and over the min Free Chlorine level for my CYA level.
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

  4. Back To Top    #4

    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    14

    Re: New pool, algae, numbers...

    Thanks guys. I will the shock process!
    24' AG, 13.5k gal, Sand filter, 1.5 hp pump.

  5. Back To Top    #5

    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    14

    Re: New pool, algae, numbers...

    Another question. After the overnight test losses 0.5 or less, what do I do to bring the FC levels down, I assume that 18-20, is not safe to swim in right ? My CYA is exactly between the 40 and 50 on the the C.A. View tube. So I have adjusted my FC to be 19, tested 3 times with same water and came up 20 the first time and 19 the other two times tonight. I will check in the morning but my CC is down to 0.5 now. I am wondering when we can back into the pool. Suppose to have pool party this weekend for my son's birthday.
    24' AG, 13.5k gal, Sand filter, 1.5 hp pump.

  6. Back To Top    #6
    dmanb2b's Avatar
    Join Date
    Apr 2009
    Location
    NY
    Posts
    3,728

    Re: New pool, algae, numbers...

    Anything below shock level is fine to swim in. For general swim conditions, I like to keep FC target around 10% of my CYA level + 1ppm.
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

    Pool School, TFTestKits, Pool Calculator

  7. Back To Top    #7

    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    14

    Re: New pool, algae, numbers...

    I guess I am confused. My shock level is 16 to 20 depending on CYA (40 to 50). My target FC is 5 to 6. How do i get from say 16 to 5? I thought the goal was to have 0 to 0.5 FC loss over night. I am really confused. Thanks
    24' AG, 13.5k gal, Sand filter, 1.5 hp pump.

  8. Back To Top    #8
    dmanb2b's Avatar
    Join Date
    Apr 2009
    Location
    NY
    Posts
    3,728

    Re: New pool, algae, numbers...

    No prob...we were all confused at some point! Overnight you won't loss FC, but you will during the day, sometime 50% or more of your FC. The higher your FC level the higher the burn rate when in full sun. You'll easily be below shock level with one full day in the sun.
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

    Pool School, TFTestKits, Pool Calculator

  9. Back To Top    #9

    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    14

    Re: New pool, algae, numbers...

    Just checked the water this morning. The FC and CC are the same at 6 am as they were last night at last check. I will continue to check it throughout the day. I assume it still keep it at shock level until I meet the 3 requirements listed right?
    24' AG, 13.5k gal, Sand filter, 1.5 hp pump.

  10. Back To Top    #10
    dmanb2b's Avatar
    Join Date
    Apr 2009
    Location
    NY
    Posts
    3,728

    Re: New pool, algae, numbers...

    How does your water look? Is it clearer than the day before. Keeping it at shock level one more day may be you best bet, but you are getting close.
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

    Pool School, TFTestKits, Pool Calculator

  11. Back To Top    #11

    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    14

    Re: New pool, algae, numbers...

    Still looks a little cloudy. I can see the bottom with no problem. Guess its time to let the filter do its thing to clear it now. I'll keep it at shock level through tomorrow night to be sure. Thanks again for the assistance.
    24' AG, 13.5k gal, Sand filter, 1.5 hp pump.

  12. Back To Top    #12
    dmanb2b's Avatar
    Join Date
    Apr 2009
    Location
    NY
    Posts
    3,728

    Re: New pool, algae, numbers...

    That sounds about right...I know it takes my sand filter 5+ days to completely filter out cloudiness. Good job.
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

    Pool School, TFTestKits, Pool Calculator

  13. Back To Top    #13

    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    14

    Re: New pool, algae, numbers...

    Just an update. So the past 2 nights I have a loss of 0 to 0.5 FC and a CC of 0.5. During the day yesterday I checked every 3 hours and it never dropped below 14 FC. I raised it back to shock level each test with 6% bleach according to the pool calc. My Ph is holding steady at 7.2. When I swept it this morning, there was areas that would make a very small and very faint green cloud. However the pool looks pretty clear, still a tad of grey/white. I can finally see the white ladder clearly all the way to the bottom and I can see the bottom just fine. Can I begin to let the pool return to normal FC levels of 6 now? Thanks!
    24' AG, 13.5k gal, Sand filter, 1.5 hp pump.

  14. Back To Top    #14

    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    14

    Re: New pool, algae, numbers...

    Just added a couple pics so you can see what I am talking about.
    Attached Images Attached Images
    24' AG, 13.5k gal, Sand filter, 1.5 hp pump.

  15. Back To Top    #15

    Re: New pool, algae, numbers...

    No, you need to wait until the water is clear. You can stop holding at shock level when

    1) water is clear
    2) pass OCLT
    3) less than .5ppm CC

    You might be able to add some DE to the sand filter to get it to filter faster. You can read about that in pool school
    17,800 gallon, IG pool, 595 sq feet (17x35x4.5 avg rectangle), Hayward 525 cartridge filter, diamondbrite, 2 hp 2 speed hayward tristar filter, Stenner 45mhp10 automatically chlorinating

  16. Back To Top    #16

    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    14

    Re: New pool, algae, numbers...

    Ok so i tested last night and again this morning. FC loss is less than 1. CC is 0.5 and the water is clear. However the water feels greasy or oily. Stick your hand in and out and it feels like I have oil or sunscreen on. I can also see lines on the top of the water sometimes, almost like a hair looks in the water. Here are the full numbers from this morning.

    PH 7.5
    FC 19
    CC 0.5
    TA 110
    CH 270
    CYA exactly between 40 and 50 on the view tube

    Any suggestions?
    24' AG, 13.5k gal, Sand filter, 1.5 hp pump.

  17. Back To Top    #17
    UnderWaterVanya's Avatar
    Join Date
    Jun 2012
    Location
    Mint Hill, NC
    Posts
    2,589

    Re: New pool, algae, numbers...

    What did you use in the pool before you came to use bbb? Did you use algaecides - if so which ones?
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

  18. Back To Top    #18

    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    14

    Re: New pool, algae, numbers...

    I have not put any algeacide in the pool. I was originally using tablets before bleach. I have only had the pool for 1 month. My wife says the pool feels fine to her and she sees nothing on the top. I think my hands were greasy from eating a biscuit this am lol and maybe I am a little paranoid. Thanks.
    24' AG, 13.5k gal, Sand filter, 1.5 hp pump.

  19. Back To Top    #19
    UnderWaterVanya's Avatar
    Join Date
    Jun 2012
    Location
    Mint Hill, NC
    Posts
    2,589

    Re: New pool, algae, numbers...

    Quote Originally Posted by Jphan
    I have not put any algeacide in the pool. I was originally using tablets before bleach. I have only had the pool for 1 month. My wife says the pool feels fine to her and she sees nothing on the top. I think my hands were greasy from eating a biscuit this am lol and maybe I am a little paranoid.
    LOL - I'd agree with your wife then!
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

  20. Back To Top    #20

    Join Date
    Jul 2010
    Location
    Philly
    Posts
    332

    Re: New pool, algae, numbers...

    Quote Originally Posted by Jphan
    Ok so i tested last night and again this morning. FC loss is less than 1. CC is 0.5 and the water is clear. However the water feels greasy or oily. Stick your hand in and out and it feels like I have oil or sunscreen on. I can also see lines on the top of the water sometimes, almost like a hair looks in the water.
    That can happen when the Chlorine level is high. It's called saponification. Your hands feel soapy and sticky. Depends on the person sometimes. The oils on your skin react with the alkalinity of the bleach and start the reaction. My wife doesn't notice (she's Irish) but I do (I'm Italian). Pour some straight bleach on your hand and your hand will feel slippery and soapy.
    Bill
    18'X4' 7600 Gal AG
    3/4 HP Pentair Pump
    Hayward S166T 100 lb sand filter

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
  •