Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: Stains

  1. Back To Top    #1

    Join Date
    Feb 2018
    Location
    Fort Myers, FL
    Posts
    7

    Stains

    I posted to this section because my pool store has recommended it is a chemical problem they can’t diagnose. I have 2 circular stains near the drains. The sides of the pool and parts of the bottom are darker like they are dirty. Standard chemistry tests and a test for metals (last year, sorry I can’t be more specific) have been normal. Does anyone have ideas? Thanks!31401B61-B31A-4123-9BA9-B512711FFB64.jpg44AB2D93-34D0-4634-83C5-D796FAD7C947.jpg

  2. Back To Top    #2
    Mod Squad Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    17,826

    Re: Stains

    Dave, first .. welcome to TFP! Here at this forum, we pride ourselves on assisting folks as much as we can, but also do so with reliable test results as more times than not, pool store testing is incorrect at best. So as a new member, the first thing we would recommend is obtaining either a TF-100 (link below) or a Taylor K-2006C test kit so we can see what your water results are like. I know, not the first thing you wanted to hear, but it's very important.

    For stains, we need some history. How old is you plaster? Have you added any pool store chemicals to the water? Be honest! What about iron in your local water supply? On a well perhaps?

    Finally, the first two things we generally recommend is to check a stain for is iron or organic staining. Try the following:
    - Place a chlorine puck against the stained area for a few minutes. If it lightens, it's algae-related.
    - Place some crushed vitamin C tablets in a nylon or similar material and lay it there for a few minutes. If it changes, it's iron.

    Also, please update your signature with all of your pool info. It will help a lot later. Let's start there and do what we can. Welcome!
    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!

  3. Back To Top    #3

    Join Date
    Feb 2018
    Location
    Fort Myers, FL
    Posts
    7

    Re: Stains

    The stains were present when I bought the house one year ago. The plaster is most likely original (12 years). We have city water and there is no iron. I did rub vit C and a chlorine tab against the stains and it did not change them. When we first moved in, I had to add stabilizer and muriatic acid but everything has been stable stable since then. I will check out the test kits. Thanks!
    11.7k in-ground, Hayward Star Clear Plus cartridge filter, Aqua Cal Leisure Temp heater, Hayward Aquarite 900, Hayward MaxFlo VS 500, Maytronics Dolphin Solo cleaner

  4. Back To Top    #4
    Mod Squad Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    17,826

    Re: Stains

    You're welcome. When you do post a set of results, it will be real-time, so we won't have all the years of history form the previous owners to know if there are any calcium issues (historically high or low) to factor in, but it should give us an idea. Let us know how things turn-out or if you have any more questions.
    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!

  5. Back To Top    #5

    Join Date
    Feb 2018
    Location
    Fort Myers, FL
    Posts
    7

    Re: Stains

    Update: I have not done the chemical testing yet. However, I had a local guy over (thinking about replacing some equipment) and he thought the two circular stains were from chlorine tabs being dropped into the pool. This scenario fits as the house was vacant for some time. I will continue to update as I get results.
    11.7k in-ground, Hayward Star Clear Plus cartridge filter, Aqua Cal Leisure Temp heater, Hayward Aquarite 900, Hayward MaxFlo VS 500, Maytronics Dolphin Solo cleaner

Posting Permissions

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