brown stains on bottom (pebble tec)

Stains on the pool surfaces, pool equipment
or on the swimmers, or off-color swimming pool
water. Discolored but clear pool water.

Pool Stains

Postby cde » Mon 12 May, 2008 13:57

I spoke w/ my local pool supply store re: the same problems.

She had me use "Metal Free" in the pool wait 24 hours and then take a powder stain remover, put it into a sock and rub it over the stains on my pool. It took a little bit of rubbing on the bad spots, but it did work.
Scott S.

Dirt Scale???

Postby Scott S. » Fri 16 May, 2008 14:04

Thanks cde,

I now think I may be dealing with something different than "Dirt Scale"... but, I'm going to keep ph at 6.8 and brush for another week or so.

I think I may have precipitated copper into my plaster when I shocked upon opening the pool... Not positive, but I think I remember adding a Winter Algaecide when I closed, and it 'may' have been a copper type.

Rather than start dumping in a bunch of chemicals until I guess right on the stain cause, I may just do an acid wash, pool is 10 years old and could use a good wash.

Thanks again,


Trying to get rid of the stains

Postby Shel-Shel » Sun 25 May, 2008 16:26

I am trying to get my pool opened but these stains everyone is talking about is what I have on my above ground pool. The pool is currently empty and I am not sure if I should go ahead and fill it up and try to get rid of the stains or leave it empty and keep on scrubbing on it??? They are awful! Any and all help would be appreciated.

Postby Guest » Tue 27 May, 2008 15:44


I am in no way an expert on this, just a frustrated 'stain scrubber'.

I went ahead and drained and acid washed my pool last Friday. It looks like new, no more stains, and it was very easy. Cost me about $150 bucks for a 25,000 gal in-ground pool. I KNOW I would have been sold at least that much in chemicals in an effort to 'lift' the stains without draining the pool.

I was very suprised to find that when I started to do the acid wash, when I compared a section just washed to a yet to be washed area, it was obvious that over the years my pool had experienced some 'metal' staining issues..... light green/teal colored stains covered the entire pool surface.

Of course, the acid wash also removed the 'sand colored' stains, which I believe were a darker copper stain that I precipitated into the plaster by just throwing a bunch of shock into the pool upon opening, without first testing the water for balance. My bad.

Good Luck with whatever you decide to do. IF you decide to treat the stains with chemicals after filling.... AND HAVE SUCCESS, would you mind posting back so we all can learn what worked?

Scott S.

Re: brown stains on bottom (pebble tec)

Postby Guest » Thu 25 Sep, 2008 09:23

estler wrote:I woke up yesterday and had a few stains on the bottom of my pool, now today they have multiplied. It almost looks like rust stains. They will not brush out. The pool is clear but has a high PH. Can anyone tell me what it is and how to get rid of it? :(

Postby poolowner91752 » Sat 25 Oct, 2008 20:22

I had a similar issue. it started when I upped my salt machine to increase the chlorine in the pool. Well that ate up my acid faster than I realized. I ended up with a VERY stained pool. I just keep the acid much higher now and the chlorine lower. The stains are starting to come off.

I have pebble tec and this method works!

Brown stains on bottom (pebble tec)

Postby polly » Sat 23 May, 2009 15:17

Hello - I have a gunite pool - empty stained brownish, reddish colored. I'm thinking some type of metal issue. I have had it acid washed - no better only in some spots but not uniformly whitened. I really do not want to paint the pool major $. So I am looking for any ideas.

Brown stains on bottom (pebble tec)

Postby Guest » Mon 25 May, 2009 08:27

what would the formular be for the acid wash?
tired pool owner

Brown stains on bottom (pebble tec)

Postby tired pool owner » Tue 26 May, 2009 19:30

I have been having problems with my pool water for the last couple seasons. Chlorine seems to be high all the time , ph always low 6.5-6.8 cannot keep any higher. experiencing light brown stains on pool drain and skimmer, jets etc. nothing seems to work other then stain remover. liner 10 years old noticing liner fading badly. appreciate any suggestions
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Swimming Pool Superstar
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Brown stains on bottom (pebble tec)

Postby Me... » Tue 26 May, 2009 20:41

How is the chlorine added? Is it total chlorine or free chlorine, there is a HUGE difference. If the pH is always low it could be the high chlorine additions or low Alkalinity. You need to be posting the test kit readings, and there should be at least 4 if not 5. Also pool gallonage.

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