Small Orange Marks After Replaster

lasvegas1976

Gold Supporter
Oct 19, 2022
98
Las Vegas
Had the entire pool redone this year.

It was replastered with new blue quartz. The pool is around 30 years old. I'm not sure if it was ever replastered. Seemed like the old owners were "painting" the pool every few years.

It's a little over 30 days since the replaster and several orange marks have popped up.

A picture is attached. There are around 8 of these marks, mostly on the steps to enter the pool and the pool's spa.

My pool guy and his people have stayed on top of the pool to ensure the water levels were right while the new blue quartz plaster is still curing. Pool was brushed several times a day for over 2 weeks.

The marks are pretty small, but I'm anal and zone in on them.

I've tried rubbing with a chlorine tab, wet/dry sand paper, but nothing really gets it to go away. I wasn't rubbing as hard as I could have, fearing the plaster is only 30 days old and I might do more harm than good.

The problem, I think.... the marks are usually on minor imperfection areas, so not sure the sand paper or chlorine tab is actually getting in there, since the area may not be level to the surface around it... if that makes sense.

I was able to get a corner of my pinky's fingernail in one of the imperfect spot areas and without question was able to pick out some organic matter, which I think was a decaying leaf and the area went from dark orange to light orange after I did that.

My pool guy thinks all of the sports are staining from leaves and soil that blew in. I do have plenty of landscaping near these areas - and during the recent run of wind storms in Las Vegas - a decent amount of dirt, soil and leaves got in the pool.

It took me days of using the pool vacuum to get the dirt/soil out - and there was a decent amount of dirt/soil on those areas affected. I would brush it off, but then hours later the water would push some of it back to those areas. (couldn't use pool rover for 30 days, but rover cant get steps or spa regardless). Eventually I broke out the vac and was using that twice a day for a few days until I saw no more soil/dirt.

Sent photos to replaster company, they are coming next week to take a look, but based on the images they said "that's not rust, we'll have to see what that is, maybe we can sand it down."
 

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If organic, maintaining the proper FC/CYA ratio will remove them over time.

You can try vitamin C to see if there is iron. If you have red rock or such in your yard that has iron in it.
 
If organic, maintaining the proper FC/CYA ratio will remove them over time.

You can try vitamin C to see if there is iron. If you have red rock or such in your yard that has iron in it.
That's what my pool guy said. He said it may take a while, but the marks will go away on their own.

There is decorative soil all over the backyard - and I believe it's made up of crushed rock. Looks identical to the picture attached. I believe it's crushed granite, which does contain some iron.
 

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I mentioned the FC/CYA ratio as 'pool guys' rarely understand that. They typically use lots of trichlor here and then drain the pool every 9-12 months.

We have iron in our water and in some of the decorative rocks.
 
I mentioned the FC/CYA ratio as 'pool guys' rarely understand that. They typically use lots of trichlor here and then drain the pool every 9-12 months.

We have iron in our water and in some of the decorative rocks.
The decorative soil all over the backyard is crushed mohave gold granite, which I believe has iron in it.

During a recent rain storm, my crushed red rock decorative soil in the front yard leaked over into my concrete driveway (the soil dust mixed with rain water) it actually left brownish streaks down my driveway that won't go away, so that stuff does stain unfortunately.
 
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I mentioned the FC/CYA ratio as 'pool guys' rarely understand that. They typically use lots of trichlor here and then drain the pool every 9-12 months.

We have iron in our water and in some of the decorative rocks.
FYI - the vitamin C rubbing did next to nothing. I'm convinced it's dirt and organic gunk sink in the imperfections. After rubbing different things and feeling the area, I could feel like a slime feeling above it that I just brush away (almost like I rubbed off a layer of something). Another spot I managed to rub off the orange color, it on more of a very flat surface rather than sunk into an imperfection (same slime like feeling after rubbing) and there was a greenish color under the orange.
 
Sounds like you need to maintain upper target range of FC for your CYA and brush those areas well. Do you have a proper test kit so you know your pool water chemistry?
 
Yeah -- bad idea. Read through this forum. 300000+ members. Nearly all here because they used to rely on a 'pool guy'.

See Pool Test Kits - Further Reading
The vitamin C trick didn't work in the pool, but I decided to try it in one of my bathrooms, as there was either rust or brown metal straining on the steel portion of the sink drain and its only 2 years old.

Now the sink drain looks brand new, like it was installed yesterday, after very little scrubbing effort with the vitamin C.
 

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The vitamin C trick didn't work in the pool, but I decided to try it in one of my bathrooms, as there was either rust or brown metal straining on the steel portion of the sink drain and its only 2 years old.

Now the sink drain looks brand new, like it was installed yesterday, after very little scrubbing effort with the vitamin C.
Good. Our water does have iron in it.
 
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