Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 7 of 7

Thread: Water is still light green and it's June!

  1. Back To Top    #1

    Water is still light green and it's June!

    Have had pool open about 3 weeks now. Frustrating trying to clear it up this year.
    It is an 18x44 in-ground fiberglass pool with a SWG.
    Just tested with a Taylor K-2006 kit and these are the numbers =
    FC= 13
    PH= 7.3
    TA= 75
    CC=1
    Calcium Hardness = 30
    CYA= 68

    Walls are also brown. We have well water and have to use vitamin C every year.
    Any advice??

  2. Back To Top    #2
    Casey's Avatar
    Join Date
    Apr 2007
    Location
    SW PA
    Posts
    10,157

    Re: Water is still light green and it's June!

    Your shock level for a CYA of 70 is 28ppm of chlorine. You're at 13ppm.

    You should also admit yourself to Pool School and read ABC's of Pool Water Chemistry
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  3. Back To Top    #3
    Butterfly's Avatar
    Join Date
    May 2007
    Location
    South Carolina
    Posts
    10,045

    Re: Water is still light green and it's June!

    Welcome to the forum

    Yeppers, what Casey said

    You do need to follow the shock process article in Pool School. Link in my sig

    Have you added sequesterant ? If not, you should add some before you shock.

    When you get done with that, your calcium is way low for a FG pool.

    Have you had the fill water tested for metals?

    What do you mean by "use Vit C every year"? Have you done an AA treatment?
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  4. Back To Top    #4

    Re: Water is still light green and it's June!

    Quote Originally Posted by Butterfly
    Welcome to the forum

    Yeppers, what Casey said

    You do need to follow the shock process article in Pool School. Link in my sig

    Have you added sequesterant ? If not, you should add some before you shock.

    When you get done with that, your calcium is way low for a FG pool.

    Have you had the fill water tested for metals?

    What do you mean by "use Vit C every year"? Have you done an AA treatment?
    What sequesterant would be best for a SWG?
    The way I know we have metals in the water is by doing a vitamin C test on the discoloration on the walls.
    I feel lost... I have read and re-read the Pool School and still get confused. What do you do to increase the calcium?
    Sorry for the newbie questions, and thanks for the advice!

  5. Back To Top    #5
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Water is still light green and it's June!

    Welcome!

    Quote Originally Posted by Lizt111
    What sequesterant would be best for a SWG?
    The way I know we have metals in the water is by doing a vitamin C test on the discoloration on the walls.
    I feel lost... I have read and re-read the Pool School and still get confused. What do you do to increase the calcium?
    Sorry for the newbie questions, and thanks for the advice!
    Wait until it's all clear to do the vitamin C treatment, because you have to let FC drop before doing it and if you think's it's green now, just wait! You won't be able to see the walls so the stains won't matter.

    Worry about raising FC to shock level and maintaining it for now. While that process is going on you'll have time to delve into the hidden reaches of Pool School and find your answers.

    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!

  6. Back To Top    #6

    Re: Water is still light green and it's June!

    Added bleach last night. Tested this evening. Numbers are:

    FC=19 (was 13.5)
    pH= 7 (was 7.3) *** Should we add Borax to raise??
    TA= 75 (same)
    Calcium Hardness = 0 (was 30)

    Of course water is low, so now have to add some....

    I know we need to keep adding bleach to get the FC up. Anything we should add at this point to raise the calcium hardness?? (TIA)

  7. Back To Top    #7
    Casey's Avatar
    Join Date
    Apr 2007
    Location
    SW PA
    Posts
    10,157

    Re: Water is still light green and it's June!

    You are not adding enough chlorine. Your CYA IS 70. Your shocking level is 28. 19 is not going to cut it. Get chlorine up to 28ppm tonight.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

Posting Permissions

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