Forum

Pink Stains on Concrete Wall

Posted by Cliff Pryor on February 17, 2010 at 11:47am in Pool Service Topics

I have a client that has a stain issue that is new to me.  This client has some pink stains along the walls and on the bottom of her pool.  The stains are about an inch high and 2-3 inches long.

 

Here are some clues that might help:

1. The surface is concrete

2. The stains have been there since before October of last year.

3. Pumice stones and brushes have been used to try to eliminate the stains with no effect,

4. The pH is 7.5, the chlorine is 0.7 and the temperature is 86-87 degrees.

5. The stains are like a permanent marker, not slimy like algae.

 

The client says that some people have told her that it may be due to the magnesium in the city water.

 

Any of you guys out there have any clue?  The client would like to remove the stains and know how to prevent future occurances.

 

Cliff Pryor

 

 

DSC03760.JPG

DSC03762.JPG

DSC03764.JPG

You need to be a member of Pool Genius Network to add comments!

Join Pool Genius Network

Tags: pink, stain
Email me when people reply –
Follow

Replies

  • Jack February 21, 2010 at 7:09am
    Hi Cliff,

    When was the pool last resurfaced?

    Jack
  • ALLEN HUNZEKER February 18, 2010 at 5:27pm
    sorry about the double entry,,could not out think the computer.
    since i love the underwater environment i have softened up stains with waterproof automotive coarse grit paper then surface app. acid .

    ALLEN HUNZEKER said:
    thanks ,bud. a lot of people don't realize it but the specific gravity of muriatic is heavier than pool water. you can manipulate gravity wtih a length of p.v.c.(in plain terms acid sinks akin to localized shock for stain treatment)

    Wes Burdine said:
    Good one Allen...

    ALLEN HUNZEKER said:
    have you tryed localized acid application?
  • ALLEN HUNZEKER February 18, 2010 at 4:02pm
    thanks ,bud. a lot of people don't realize it but the specific gravity of muriatic is heavier than pool water. you can manipulate gravity wtih a length of p.v.c.(in plain terms acid sinks akin to localized shock for stain treatment)

    Wes Burdine said:
    Good one Allen...

    ALLEN HUNZEKER said:
    have you tryed localized acid application?
  • Wes Burdine February 18, 2010 at 1:52pm
    Good one Allen...

    ALLEN HUNZEKER said:
    have you tryed localized acid application?
  • ALLEN HUNZEKER February 17, 2010 at 11:54pm
    have you tryed localized acid application?
  • Wes Burdine February 17, 2010 at 1:45pm
    Hey Cliff,

    Have you tried Jack's Magic Stain I.D. kit?

    By the way, how do you know Lee Wood? He and I used to work closely while he was the TN State Pool Reg. before his promotion. Great guy!
  • Matt Cellura February 17, 2010 at 12:06pm
    Is it a painted or aggregate surface?
    How porous is the surface?
This reply was deleted.

Pool/Spa Articles