+ Reply to Thread
Page 2 of 2 FirstFirst 1 2
Results 11 to 14 of 14

Thread: Tannins in Pool Water?

  1. #11
    Join Date
    May 2018
    Location
    Illinois
    Posts
    9

    Default Re: Tannins in Pool Water?

    I am now subscribed.

    So good news and bad news... Got the Alkalinity down. I don't have the numbers in front of me, but its around 120. However... PH dropped quickly, I should have tested every day, but didn't. Its down to 6.6. First and foremost, is that safe to swim in? I read your other post about Borax. I have added 6 cups of borax (10,000 gallon pool, 1 dose) last night. I will be checking today to see how the pool adjusted.

  2. #12
    PoolDoc's Avatar
    PoolDoc is offline Administrator Quark Inspector PoolDoc 5 stars PoolDoc 5 stars PoolDoc 5 stars PoolDoc 5 stars PoolDoc 5 stars PoolDoc 5 stars PoolDoc 5 stars
    Join Date
    Jan 2005
    Location
    Georgia
    Posts
    11,386

    Default Re: Tannins in Pool Water?

    Intex 22' x 52" Round Above Ground Pool - 2500 GPH Cartridge Filter
    10,000 gallons - PF=12

    A pH of 6.6 isn't unsafe . . . but the problem is, it may not be "6.6", either. Probably, that's just as low as your kit or strip goes, so an actual "6.6" or an actual "4.6" would still READ 6.6!

    Don't swim till your pH is ABOVE the lowest value your kit can detect.

    Are the stains gone? What is your stabilizer level? What is your calcium level?

    (Thanks for the subscription!)

  3. #13
    Join Date
    May 2018
    Location
    Illinois
    Posts
    9

    Default Re: Tannins in Pool Water?

    Can you help me understand where you got 12 cups? I used the link below and I came up with 6. I believe you of course, but just want to understand. 😊

    http://www.poolforum.com/pf2/showthread.php/17055

  4. #14
    PoolDoc's Avatar
    PoolDoc is offline Administrator Quark Inspector PoolDoc 5 stars PoolDoc 5 stars PoolDoc 5 stars PoolDoc 5 stars PoolDoc 5 stars PoolDoc 5 stars PoolDoc 5 stars
    Join Date
    Jan 2005
    Location
    Georgia
    Posts
    11,386

    Default Re: Tannins in Pool Water?

    "PF=12" is more a note to me. It means that your pool is 1/12 of a million pound pool, or that 1 pound of stabilizer (or chlorine gas) will add 12 ppm of stabilizer (or chlorine).

    PF (Pool Factor) offers a quick way of calculating doses:

    PF x pounds added x % concentration = PPM added.

    So, in the case of 1# of dichlor (55% chlorine; 50% stabilizer), the calc is:

    12 x 1 x .55 = ~7 ppm added (6.6) for chlorine and 12 x 1 x .50 = 6 ppm stabilizer. (I know the percents don't add up: but chlorine percents are reported compared to chlorine gas, which is 100% chlorine gas, but when hydrolyzed is ~50% HCl and ~50% HOCl. HCl is muratic acid; HOCl is chlorine in the pool or sanitizing sense.)

+ Reply to Thread

Similar Threads

  1. Pool water green and water 40 degrees
    By Slachey in forum Pool Startup, Shutdown, & Winter Operation
    Replies: 6
    Last Post: 03-21-2016, 11:35 AM
  2. Water turns green when I had water to pool
    By Skymarc in forum Pool Chemicals & Pool Water Problems
    Replies: 7
    Last Post: 05-10-2015, 09:53 PM
  3. Salt Water Pool Water Smells Like Must
    By desherer in forum Salt Generators (SWCG) & other Chlorine Feeders
    Replies: 18
    Last Post: 06-28-2011, 01:20 PM
  4. How do I remove the tannins from my pool?
    By WendyO911 in forum Testing and Adjusting Pool Water Chemistry
    Replies: 1
    Last Post: 06-23-2011, 09:06 PM
  5. got new 24x5 round intex pool need help with water. Sandy water..help
    By iwannaswim in forum Pool Chemistry for Intex-type Pools
    Replies: 3
    Last Post: 06-08-2011, 08:42 PM

Bookmarks

Posting Permissions

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