+ Reply to Thread
Results 1 to 3 of 3

Thread: Yellow stain in inground pool

  1. #1
    Join Date
    Mar 2006
    Posts
    33

    Default Yellow stain in inground pool

    I did a search for this but didn't find anything that directly related to my question....I have an inground pool and earlier this summer we had some problems with yellow algae that I quickly cleared up. We've had a TON of rain the past month or so and after each "bout" I shock the pool BEFORE problems set in (I noticed if I didn't they inevitably DID).

    When we had the yellow algae it was very silty and easy brushed up...but now I am noticing yellowing in a lot of areas of the pool that cannot be brushed and nothing changes once the pool is shocked. The pool DOES need to be refinished, but that will probably not happen until next summer. So I KNOW the surface is not in the BEST shape...anyway, does anyone know what might have caused this staining and also if there is anything I can do to remove it? The chemicals are perfectly balanced and the water is crystal clear but those stains REALLY bother me!

  2. #2
    mbar's Avatar
    mbar is offline PF Support Team Whizbang Spinner mbar 3 stars mbar 3 stars mbar 3 stars mbar 3 stars
    Join Date
    Dec 1969
    Location
    Ashland, PA
    Posts
    1,091

    Default Re: Yellow stain in inground pool

    You may have caused any metals in your water to fall out and stain the pool surface when you had your chlorine levels high. YOu can tell if the stain is mineral by getting a few vitamin C tablets, crushing them up, putting them in a sock and rubbing on the stain. If the stain lightens or disappears, then it is a mineral (metal) stain. To find out if the stain is organic, you can use a trichlor tablet crushed up and do the same thing. If the stains lightens or disappears, it is organic. To get rid of a metal stain, you can first try to get a sequestering agent, lower the ph down to 7 and use as directed on the bottle. If this doesn't lift the stain, then you can do an ascorbic acid treatment. I can give you the directions for this. If it is an organic stain, then it will go away with high levels of chlorine. Let me know how you do. Don't worry - the stains can be taken care of
    Northeast PA
    16'x32' kidney 16K gal IG fiberglass pool; Bleach; Hayward 200lb sand filter; Hayward pump; 24hrs; Pf200; well; summer: none; winter: mesh; ; PF:7.5

  3. #3
    Join Date
    Mar 2006
    Posts
    33

    Default Re: Yellow stain in inground pool

    Thanks! I will try that and see what happens...

+ Reply to Thread

Similar Threads

  1. Pool Water slightly yellow
    By watergirl101 in forum Pool Chemistry for Intex-type Pools
    Replies: 4
    Last Post: 06-12-2013, 06:12 PM
  2. Yellow stain on steps from chlorine tablets
    By Chuppet in forum Pool Chemicals & Pool Water Problems
    Replies: 5
    Last Post: 06-21-2012, 11:22 PM
  3. How to remove yellow stain at the bottom of the pool
    By andrewkuo in forum Dealing with Algae & Slime
    Replies: 1
    Last Post: 05-25-2012, 09:37 PM
  4. My pool is now yellow, I'm a bit freaked out
    By Rick Lohr in forum Chlorine Alternatives: UV, Ozone, Baquacil (PHMB), etc
    Replies: 2
    Last Post: 08-06-2011, 08:09 PM
  5. fiberglass, slight yellow whole pool stain/coating
    By jonnygib in forum Dealing with Stains & Metals, . . . and 'Minerals' & 'Ions',
    Replies: 19
    Last Post: 06-17-2007, 09:42 AM

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