Quartzon Pool (6 month's) old with light grey patches

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

Quartzon Pool (6 month's) old with light grey patches

Postby cooldip » Sat 13 Dec, 2008 22:19

We have irregular patches (light grey in colour) throughout the surface of the pool which appear to be increasing. Have had pool people out to get the chemical balance right but the patches remain. Can anyone put some light on the subject, please.


ninpoolman
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Joined: Wed 10 Dec, 2008 19:30
Location: Antelope ca.

Postby ninpoolman » Sun 14 Dec, 2008 12:53

It could be chemical or it could be a bad mix of maybe dirty plaster. Maybe bad fill water. Also it could electrolysis if you have high tension electrical wires near your pool.
Really nobody knows for sure on these kinds of stains because the definitive work in studying these troubles are still in the works. A lot of pool techs. will tell you it is this or that but it is guess work at best and they want to sound
authoritative and in control or if a store they want you to buy their products to help pay the overhead on the store.
Barry
Barry Brodeur
Owner A-1 Pool Service
since 1976
Being a pool grunt since '65.
Guest

Quartzon Problems

Postby Guest » Wed 02 Dec, 2009 17:04

Could be badly mixed plaster or leaching of the coloring agent.
Guest

Quartzon Pool (6 month's) old with light grey patches

Postby Guest » Thu 03 Dec, 2009 05:23

Scaling or high pH and TA with metals or calcium
bond

Quartzon Pool (6 month's) old with light grey patches

Postby bond » Thu 03 Dec, 2009 10:33

Pool User wrote:Scaling or high pH and TA with metals or calcium


YOU FORGOT TO MENTION TO TAKE OFF THE TRANSITION LENSES.
BTW,THIS AN ADULT FORUM.
czechmate
Swimming Pool Superstar
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My Pool: 16 x 32 gunite21000 gal., Diamond Brite Blue, Swimquip XL pump, DE36
Location: Texas

Quartzon Pool (6 month's) old with light grey patches

Postby czechmate » Thu 03 Dec, 2009 11:21

Pool User wrote:Scaling or high pH and TA with metals or calcium
:crazy:

Seriously now.
It is a common practice in the pool industry to acid wash the newly applied plaster to clean from plaster residual and expose the new surface. The concentration of muriatic acid and technique applied is crucial as well as the experience of the crew.
From all the modern surfaces applied today the dark colored plaster is the most demanding on lot match and the perfect mixing during the application process and then also very touchy about acid washing. In your case it may be the combination of both.
Since the plaster application is usually supervised by the owner or company foreman and the acid wash almost never, I suspect that the crew washed from the deck by buckets, acid mix was not uniform and the exposure time to the harsh acid mix was uneven and possibly too long in places, where it sat prior to following wash down.
There is no easy fix for improper work procedure. Acid wash is fairly demanding procedure on old white plaster. It takes even more experience to wash properly fresh Diamond Brite or Pebble Tech.
The gray or dark plaster is sort of crap shoot, depending on quality of the crew and almost always with some deficiencies.
The industry does not always inform the potential customer of the downfalls in selecting some of the exotic surfaces now available. It is mostly left to the buyer to do diligent research prior to spending their hard earned money.
Guest

Quartzon Problems

Postby Guest » Thu 03 Dec, 2009 16:01

Thanks for the very informative post. I never realised that the new surface was acid washed, I thought that was only for old pools.

I also didn't know that the acid could change the tone of darker surfaces so much. Thank you :thumbup:
czechmate
Swimming Pool Superstar
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Posts: 401
Joined: Sat 16 May, 2009 09:20
My Pool: 16 x 32 gunite21000 gal., Diamond Brite Blue, Swimquip XL pump, DE36
Location: Texas

Quartzon Pool (6 month's) old with light grey patches

Postby czechmate » Thu 03 Dec, 2009 17:25

Most pool owners do not know that new pool surface acid wash is fairly common.
The reason s two fold.
It removes the film of plaster milk that was pushed to the surface by troweling.
This residue will harden fairly quickly and wold have to be removed by hard brushing, 3 times a day for 2 weeks. This is specially important on plaster like Diamond Brite to expose the embeded quartz aggregate, which will immediately lend its colors to the hue of pool water color for its ultimate desired result.
Similar result is achieved on Pebble Tech, where cleaned stone is reflecting color a and clarity to the water.
Pool contractors know, that the customer will not do this brushing diligently to a satisfying result ,which will in turn affect contractors reputation and possible recommendation.
Second reason is to get rid of calcium rich film out of the pool quickly and lower the demand for acid needed to balance the PH, while the plaster is still curing, releasing it also.
Some contractors do the acid wash by dumping 7-9 gal in the fresh fill and than brushing for 5-7 days.
This will bring more uniform result, but the pump is not running and the brushing has to be rigorous for several days.
This procedure is commonly used even after basic acid wash, with lower acid concentration and owner doing the brushing. The acid is afterward neutralized by borax or baking soda to balance PH.
marteb
Pool Newbie
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Posts: 1
Joined: Thu 18 Feb, 2010 11:28
My Pool: Inground, gunite with dark blue plaster.
kiddney shape approx 14000 gal
salt system / jandy pump
Polaris cleaning system
Location: Midlothian TX.

Quartzon Pool (6 month's) old with light grey patches

Postby marteb » Thu 18 Feb, 2010 12:09

Both my neighbor and I had pools built within eight months of each other. They are identical except in size. My pool is 2years old and his is 1 1/2 yrs. We both have the same type staining of light grey pathes. Howevr booth also are experpitting in the plaster whic has the apperance of an orange peal. However my hot tub had to be replastered approximately 1 week after it was filled do to rough spots. It now has not shown any discoloration or spotting like my pool. When Ibrought it up to my builder he claimed it was the water and the chemical balance. Same water in the pool and hot tub 1 discolored 1 not. I believe it to be a plaster issue. What is your take on the pool verus the spa? Why would one stain and not the other? What can be done to eliminate the staining?

Thanks
Guest

Quartzon Pool (6 month's) old with light grey patches

Postby Guest » Fri 09 Jul, 2010 00:37

Hi All,

I have been doing numerous research and obtaining quotes to resurface an old marblesheen pool. A fellow from Melbourne, I am in Brisbane and accidently rang him for a quote. we worked out he was not going to come down for a quote ,so there was nothing in it for him, informed me never to do quartzon in a pool as you will have stains and won't be happy, but also the surface won't last. Many pool people are pushing it - looks nice in the samples! research and quotes plus plus are a must. So I have decied no to quartzon now. Still researching.

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