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Thread: Slight Green Algae Issue- New TF-100 Test Kit in Hand

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    Join Date
    Jun 2015
    Location
    Montgomery, TX
    Posts
    22

    Slight Green Algae Issue- New TF-100 Test Kit in Hand

    Evening,

    Well we had our pool built late last summer and only got to use it for about 6 weeks before the temperatures dropped in TX. This spring we have had a large amount of rain and I have recently noticed that some parts of my pool walls have green on them. In addition the water is not as clear as it once was. A currently has a little bit of green tint to it.

    So I head down to Leslie's and they check all my levels, my wife also tests them on her own. Below are the levels all within normal range except for the phosphates are a little high:

    1) FC-4 ppm
    2) TAC- 4 ppm
    3) CH- 240ppm
    4) CYA- 50 ppm
    5) TA- 110 ppm
    6) PH- 7.6
    7) Copper- 0
    8) Iron - 0
    9) TDS- 500
    10) PHO - 300

    I then proceed to tell him about the green spots on the side walls. Well here comes the list of items he sells me on:

    1) 5 lbs of Green to Clean
    2) 15 lbs Leslie's Powder Plus Shock
    3 2 bottles of Leslie's Clear Aid

    So I buy all of the above items and I proceed home. When I get home I start my research and that's when I come across trouble free pools and start to do my research. Needless to say is that I have not added any of the above chemicals yet and am just continuing to brush.

    TF-100 test kit was ordered last Thursday and arrived today. Tested the pool @ 8.30 pm after all pumps had shut down for the day, for the first time with the kit and here are the results:

    1) FC-2.5 ppm
    2) CC- 0.5 ppm
    3) PH - 7.5
    4) TA- 70
    5) CH-300 ppm
    6) CYA- 35

    Will perform the overnight FC loss test in the morning to determine if I indeed have an issue.

    I have been reading up about pool chemistry and the SLAM process and am ready to tackle if needed. I will attach pictures Tommorrow of the green issues on the walls and pool. Not as bad as I have seen from others in the forums.

    My my question is during the SLAM process should I run my in floor cleaning system continuously?

    Also will be confirming with the pool math calculator what to do in order to get to the recommended levels.

    Any further help or input would be much appreciated.

    Thanks
    39,460 Gallon Gunite outdoor in-ground, Pebble Tec, 37' W x 38'6" L, Attached Spa and slide, Pentair Clean and Clear Plus Cartridge Filter, 2- Pentair Sta Rite Variable speed pumps, Pentair Sta Rite 3.0 hp Max E Pro, Paramount PCC 2000 In Floor Cleaning and Circulation system, Rainbow Chlorinator, Paramount O3 Ozonator and Trident UV

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    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Slight Green Algae Issue- New TF-100 Test Kit in Hand

    Welcome !

    I wouldn't even waste time with an overnight loss test. You already said "I have recently noticed that some parts of my pool walls have green on them. In addition the water is not as clear as it once was. A currently has a little bit of green tint to it." That's all you need to know. Don't waste time. Get some bleach in there. The sooner you kill it the faster it will clear and the less bleach it will take. Anything you can do to improve circulation helps. When bleach kills algae, there's no more in that area unless there's good circulation to bring a fresh supply to it. You want the potent SLAM water to go through all the plumbing, too. I'd run the floor system if I had it.

    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  3. Back To Top    #3

    Join Date
    Jun 2015
    Location
    Montgomery, TX
    Posts
    22

    Re: Slight Green Algae Issue- New TF-100 Test Kit in Hand

    Thanks for the confirmation.

    During the SLAM process do I turn my level on the Rainbow Chlorinator to 0, completely off or do I just keep it at the same level that I have it?

    Quote Originally Posted by Richard320 View Post
    Welcome !

    I wouldn't even waste time with an overnight loss test. You already said "I have recently noticed that some parts of my pool walls have green on them. In addition the water is not as clear as it once was. A currently has a little bit of green tint to it." That's all you need to know. Don't waste time. Get some bleach in there. The sooner you kill it the faster it will clear and the less bleach it will take. Anything you can do to improve circulation helps. When bleach kills algae, there's no more in that area unless there's good circulation to bring a fresh supply to it. You want the potent SLAM water to go through all the plumbing, too. I'd run the floor system if I had it.

    39,460 Gallon Gunite outdoor in-ground, Pebble Tec, 37' W x 38'6" L, Attached Spa and slide, Pentair Clean and Clear Plus Cartridge Filter, 2- Pentair Sta Rite Variable speed pumps, Pentair Sta Rite 3.0 hp Max E Pro, Paramount PCC 2000 In Floor Cleaning and Circulation system, Rainbow Chlorinator, Paramount O3 Ozonator and Trident UV

  4. Back To Top    #4
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Slight Green Algae Issue- New TF-100 Test Kit in Hand

    Quote Originally Posted by gcivic29 View Post
    Thanks for the confirmation.

    During the SLAM process do I turn my level on the Rainbow Chlorinator to 0, completely off or do I just keep it at the same level that I have it?
    I'd shut it off during the SLAM and then restart it afterwards to raise the CYA a bit. If it's on during the SLAM, you'll just keep raising the CYA level which will raise shock level. You are aware of the dangers of overstabilized water, yes? When your CYA hits 50 or so, that's it, no more pucks except for vacations when no one is around to add bleach. Also, you might as well kill the UV and ozone so they don't skew the overnight loss test results. Whether they're necessary for anything but lining the builder's pockets is another discussion altogether.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  5. Back To Top    #5

    Join Date
    Jun 2015
    Location
    Montgomery, TX
    Posts
    22

    Re: Green Algae's behavior at target FC and SLAM?

    Ok. Test results from tonight

    FC 1.5
    PH 7.5
    TA 70
    CH 250
    CYA 40

    SLAM In progress as of 9pm. Added 892 oz of liquid bleach. Had to run out again to get more for Tommorrow morning. Filter pump is running and will be all night.

    Will test FC in am and add bleach as necessary in order to maintain FC shock level of 16.

    Will keep een you updated on progress. Brushed pool before the SLAM and algae green was more noticeable than before.
    39,460 Gallon Gunite outdoor in-ground, Pebble Tec, 37' W x 38'6" L, Attached Spa and slide, Pentair Clean and Clear Plus Cartridge Filter, 2- Pentair Sta Rite Variable speed pumps, Pentair Sta Rite 3.0 hp Max E Pro, Paramount PCC 2000 In Floor Cleaning and Circulation system, Rainbow Chlorinator, Paramount O3 Ozonator and Trident UV

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