Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: Just Tested - Need Knowledge

  1. Back To Top    #1

    Join Date
    Apr 2015
    Location
    Dallas/TX
    Posts
    3

    Just Tested - Need Knowledge

    Okay gang, so we just bought a house in the Dallas area with a pool, been here for about 2 months. We inherited a pool guy who was taking care of the pool for the previous owners, but after reading on this site for the past month or so and the pool starting to grow algae, we decided to get rid of the pool guy and take care of it ourselves. He was using 3" tabs for chlorination in a floater.

    After reading through pool school and a bunch of posts about SLAMing and caring for the pool I was sure I had it down and would not need to ask questions, guess I thought wrong!

    So here it goes...
    Taylor K2006 test kit arrived yesterday, I know we have minor algae in the pool but the water looks perfectly clear, except right after brushing. Brushing causes the pool to turn slightly clouding green, then clears after a couple of hours of filtering and settling. Last weekend I completely disassembled the DE filter cleaned it and re-loaded the DE.

    Just ran a full test on the pool...
    FC = 3.5
    CC = .5
    PH = 7.4
    TA = 80
    CYA = 90
    CH = 350

    My plan is to perform a SLAM to completely kill off the algae, but I question first is with the CYA high and CH slightly high should I do a partial drain and refill to lower those first or after the SLAM. I plan on lowering them just not sure if it would be better first or second.

    Also one other question, my backwash drain line is tied into the city sewer line in front of my house. Is this normal or good or bad?

    Thanks for your thoughts!
    13K Gallon IG, pebble finish
    Pentair FNS Plus 60 DE Filter
    Pentair CHII-N1 1.5HP pump
    Waterfall with .75HP second pump
    AquaLink RS4 Controller

  2. Back To Top    #2
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Location
    Columbia, SC
    Posts
    8,495

    Re: Just Tested - Need Knowledge

    A partial drain will mean you wil need less chlorine for the SLAM, so yes - I would address it now.

    With a CYA of 90 your target FC should be 10 and NEVER go below 7. if you don't address the CYA your shock level is 35

    As long as the sewer authority has no problems with the backwash drain going into their system it seems like a good plan.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

  3. Back To Top    #3

    Join Date
    Apr 2015
    Location
    Dallas/TX
    Posts
    3

    Re: Just Tested - Need Knowledge

    Thanks Tim, we came up with the same figures for chlorine and figured that would be the better route.
    13K Gallon IG, pebble finish
    Pentair FNS Plus 60 DE Filter
    Pentair CHII-N1 1.5HP pump
    Waterfall with .75HP second pump
    AquaLink RS4 Controller

  4. Back To Top    #4
    Divin Dave's Avatar
    Join Date
    Oct 2013
    Location
    Longview, Texas
    Posts
    4,926

    Re: Just Tested - Need Knowledge

    I agree with Tim. Go ahead and take care of the CYA issue now, it will be much easier and less expensive.

    If your backwash is plumbed into the city sewer line, it was done so (I would hope) with the city building code and permit office, so should be ok (I would think).


    Quote Originally Posted by jmccafferty View Post
    Okay gang, so we just bought a house in the Dallas area with a pool, been here for about 2 months. We inherited a pool guy who was taking care of the pool for the previous owners, but after reading on this site for the past month or so and the pool starting to grow algae, we decided to get rid of the pool guy and take care of it ourselves. He was using 3" tabs for chlorination in a floater.

    After reading through pool school and a bunch of posts about SLAMing and caring for the pool I was sure I had it down and would not need to ask questions, guess I thought wrong!

    So here it goes...
    Taylor K2006 test kit arrived yesterday, I know we have minor algae in the pool but the water looks perfectly clear, except right after brushing. Brushing causes the pool to turn slightly clouding green, then clears after a couple of hours of filtering and settling. Last weekend I completely disassembled the DE filter cleaned it and re-loaded the DE.

    Just ran a full test on the pool...
    FC = 3.5
    CC = .5
    PH = 7.4
    TA = 80
    CYA = 90
    CH = 350

    My plan is to perform a SLAM to completely kill off the algae, but I question first is with the CYA high and CH slightly high should I do a partial drain and refill to lower those first or after the SLAM. I plan on lowering them just not sure if it would be better first or second.

    Also one other question, my backwash drain line is tied into the city sewer line in front of my house. Is this normal or good or bad?

    Thanks for your thoughts!
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

  5. Back To Top    #5
    Mod Squad Jimrahbe's Avatar
    Join Date
    Jul 2014
    Location
    Bedford, TX
    Posts
    5,311

    Re: Just Tested - Need Knowledge

    My daughter lives in the City of Farmers Branch, Texas, across the street is Dallas. In Farmers Branch it is a 'requirement' that you backwash to the sanitary sewer. She got a warning notice telling her not to backwash to the storm drain. I live in the City of Bedford, Texas, and all new DE Filter backwash lines also have to be connected to the Sewer. Not sure if Dallas is the same way or not, but since you are already connected to the sewer, my guess would be that it is perfectly normal.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Calder Spa.

  6. Back To Top    #6

    Join Date
    Apr 2015
    Location
    Dallas/TX
    Posts
    3

    Re: Just Tested - Need Knowledge

    Jimrahbe sounds like we are neighbors with your daughter and pretty close to you, we actually live in Addison, Farmers Branch is across the street from our neighborhood. Thanks for the info.
    13K Gallon IG, pebble finish
    Pentair FNS Plus 60 DE Filter
    Pentair CHII-N1 1.5HP pump
    Waterfall with .75HP second pump
    AquaLink RS4 Controller

Posting Permissions

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