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

Thread: Cloudy and green

  1. Back To Top    #1

    Cloudy and green

    Hi, i am new to the forum. I have read lots of great info so far. Our above ground pool keeps getting a green algae. My chlorine level is 3 and the pH is 7.5. I shocked with liquid chlorine last night and brushed the entire pool. This morning it is very milky and there is of course greenish yellow residue on bottom. My question is do I vacuum to waste now and backwash my filter? How long does it take to clear? I keep getting to this point and then it turns green again! Help please!
    Melissa
    18x34 above gr, sand filter, in Elkhart Texas

  2. Back To Top    #2

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,082

    Re: Cloudy and green

    Welcome to the forum.

    You are not shocking your pool. read "How to Shock Your Pool" up in Pool School. That process must be followed precisely in order for your pool to clear. Dosing it once with chlorine won't work.

    Vacuuming and backwashing your filter is all a part of that process described. It may take several days but there is no other way to get your pool really crystal clear.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3
    Mod Squad kimkats's Avatar
    Join Date
    Jul 2012
    Location
    Tallahassee, FL
    Posts
    26,689

    Re: Cloudy and green

    It can be done but it does take time. It is a process not a one time action.

    One of the best things you can do to help yourself is to order a good test kit. In my siggy is a link to the tests kits that we all use. They WILL save you time and money in the long run.

    Good luck and happy swimming!
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

  4. Back To Top    #4

    Re: Cloudy and green

    Ordered a test kit. Had pool place check my levels and they are as follows: FC 1.91, TC 2.33, pH 7.6, hardness 262, alkalinity 91.3 and CYA 79. They recommended 11.2 oz of shock and a bottle of Flock. What is your recommendation?
    18x34 above gr, sand filter, in Elkhart Texas

  5. Back To Top    #5

    Re: Cloudy and green

    Also, he said my chlorine was "locked up" and therefore not effective?? What are your thoughts on this?
    18x34 above gr, sand filter, in Elkhart Texas

  6. Back To Top    #6

    Re: Cloudy and green

    Quote Originally Posted by Mopool
    Also, he said my chlorine was "locked up" and therefore not effective?? What are your thoughts on this?
    He means your CYA is too high. To put it simply, the higher the CYA, the more FC you will need to sanitize. Read pool school and search for "green pool" threads. You will learn a lot very shortly.
    Walnut Creek, CA. 18k gallon Pebble Sheen + 1.5k gallon IG spa, 1.5hp whisperflo main pump, Pentair clean and clear 420, Intellichlor IC20, Polaris 360 w/booster,Jandy lite 2 natural gas, plus solar with Heliomatic 5000 controller and 3/4 hp booster

  7. Back To Top    #7

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

    Re: Cloudy and green

    And he suggested more "shock" which will contribute to the problem. Do you have a salt pool, or just normal?
    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!

  8. Back To Top    #8

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,082

    Re: Cloudy and green

    What is your recommendation?
    1. Stay out of the pool store

    2.. read "The ABC's of Pool Water Chemistry" up in Pool School

    3. read "How to Shock Your Pool" up in Pool School

    4. You must follow that shock process in the pool school article. It will require your good kit and posting your own test results.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  9. Back To Top    #9

    Re: Cloudy and green

    I had to go to the pool store to get an idea of a CYA reading...Regular pool, went ahead and did use the flock. Just vacuumed to waste the algae that was on the bottom. Pool water is clear but i still don't know about how much if any chlorine to add. I have liquid bleach. Do i need to put bleach in or not? It will be several days before my kit arrives. I don't want the algae to take over again. How can I keep that from happening?
    18x34 above gr, sand filter, in Elkhart Texas

  10. Back To Top    #10

    Re: Cloudy and green

    I edited my signature but noticed the info isnt there...16,500 gallons, sand filter. Frustrated
    18x34 above gr, sand filter, in Elkhart Texas

  11. Back To Top    #11

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

    Re: Cloudy and green

    Use http://www.poolcalculator.com to know what to add. Let us know if you have questions about it.

    Your CYA of 80, if accurate, is high. Your FC of 3 is not high enough to prevent algae with that CYA.

    Also, please note that until you can pass the OCLT, you do not know yet if you are done shocking the pool. Clear water is only one of three criteria.
    pool-school/overnight_fc_test
    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!

  12. Back To Top    #12

    Re: Cloudy and green

    While you are waiting for the test kit, you could assume that your CYA is as high as the pool store test (79) and find out what the recommended chlorine level should be for your pool by using the pool calculator. Then just try to keep it there until you have done your own testing. That could be enough to hold off the algae.
    http://www.poolcalculator.com/
    Walnut Creek, CA. 18k gallon Pebble Sheen + 1.5k gallon IG spa, 1.5hp whisperflo main pump, Pentair clean and clear 420, Intellichlor IC20, Polaris 360 w/booster,Jandy lite 2 natural gas, plus solar with Heliomatic 5000 controller and 3/4 hp booster

  13. Back To Top    #13
    Charlie_R's Avatar
    Join Date
    May 2013
    Location
    Mexico, MO
    Posts
    2,156

    Re: Cloudy and green

    Assuming that the pool store may be somewhat close to your actual CYA level (which is doubtful) you need to bring your chlorine up to around 30, and keep it there until we know the actual CYA level from your own testing.

    If it is actually that high, you may need to do a drain 1/3 and refill a couple of times to bring the CYA down to a reasonable level.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

  14. Back To Top    #14

    Re: Cloudy and green

    I guess I am just stuck out until my kit arrives. The little test kit I have is just an HTH 3 way test. I have no way of knowing if my chlorine is near 30...also just noticed that are are clear little particles floating in the water as well. Ugh
    18x34 above gr, sand filter, in Elkhart Texas

  15. Back To Top    #15

    Re: Cloudy and green

    Other people are more experienced than I but IMHO you should definately keep chlorine in there until the test kit comes. If nothing else, shoot for a level you can measure. Bring it up as high as you can measure and keep it there until the kit comes, but don't let it drop to nothing.
    Walnut Creek, CA. 18k gallon Pebble Sheen + 1.5k gallon IG spa, 1.5hp whisperflo main pump, Pentair clean and clear 420, Intellichlor IC20, Polaris 360 w/booster,Jandy lite 2 natural gas, plus solar with Heliomatic 5000 controller and 3/4 hp booster

  16. Back To Top    #16

    Re: Cloudy and green

    Thanks everyone for the help. I added another gallon of concentrated bleach and tested again. Chlorine is high and Alkalinity is good. Going to try and keep it there until my kit arrives. Water is clear for now.
    18x34 above gr, sand filter, in Elkhart Texas

  17. Back To Top    #17
    Casey's Avatar
    Join Date
    Apr 2007
    Location
    SW PA
    Posts
    10,157

    Re: Cloudy and green

    Please read through Pool School again until your test kit arrives and get aquainted with the pool calculator so you know how to use it when you get the kit. It all works together.

    Welcome to TFP.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  18. Back To Top    #18

    Re: Cloudy and green

    Ok, so my kit arrived this morning and my CyA is about 75-80, which is what the pool store told me. They say that the recommended range for this area is 80-85. I have been putting in 121oz of concentrated bleach everyday to try and keep the algae at bay. My other readings are as follows: FC 6, pH 7.5. I still have spots coming up in the pool each day that I am vacuuming out. I read in pool school but I don't know what my CYA level should be so I can figure how much to drain.
    18x34 above gr, sand filter, in Elkhart Texas

  19. Back To Top    #19

    Re: Cloudy and green

    Also, i didn't lose much chlorine overnight. 6 last night and close to 6 when tested this morning.
    18x34 above gr, sand filter, in Elkhart Texas

  20. Back To Top    #20
    Casey's Avatar
    Join Date
    Apr 2007
    Location
    SW PA
    Posts
    10,157

    Re: Cloudy and green

    Can you please clarify what you meant by not losing that much last night?
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De 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
  •