Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 2 of 2

Thread: Dark small stains

  1. Back To Top    #1

    Join Date
    Jul 2015
    Location
    Stoughton, MA
    Posts
    1

    Dark small stains

    Hello, I've been reading posts on this forum and found it very useful and educational. Finally decided to join.
    I have inground, 30000 gallon pool, vinyl, cartridge filter.
    Initially had problem with metal stains. Solved this with ascorbic acid treatment followed by Natural Chemistry Metal Free. Worked great but stains returned couple weeks later. I'm on my secound acid treatment plus now has coolator 4ppm in the pump basket.
    With all of the above said, there are still a few of dark elongated stains at the shallow end that won't dissapear. Almost look like the liner is "burnt" there, like a permanent stain. Any ideas?
    Thanks a bunch

  2. Back To Top    #2
    Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    12,979

    Re: Dark small stains

    Hello and welcome to TFP! You're the 2nd person to ask the same question, and rather than have you feel like we missed your post (we didn't ), I thought I would cut & paste some of my stain favorites. Some you have tried, maybe something else will work, or others will reply. Good luck!
    - Try using an orange, lemon, or lime rub an area with the cut half
    - Some people have had success with Mr. Clean's Magic Eraser
    - Some stains can be removed with a chlorine tablet
    - Jacks Magic Blue Stuff or other metal sequestrant
    - Ascorbic Acid
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

Posting Permissions

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