Help!!! Brand new plaster stains

[onBalance]

Have your tap water tested for iron content.
And please post the TA, CH, and pH of your tap water and also for your current pool water.

 

[Cantabrigienne]

Have your tap water tested for iron content.
And please post the TA, CH, and pH of your tap water and also for your current pool water.

Ok, I’ve ordered one of the TF-100 test kits but it hasn’t come yet. (I also tried the vitamin C tablet on a stain yesterday but it didn’t do anything).

 

[Cantabrigienne]

I came across an old thread in which something similar happened, and the owner took a discount in exchange for letting her pool contractor acid wash the new plaster as a fix. This seems like, perhaps, a reasonable compromise, but I’m not sure what a reasonable amount would be in exchange for the reduced life of the plaster...

 

[onBalance]

It may be that the yellow discoloration is iron staining or even dirt, both of which can be removed rather easily with some of type of acid treatment. But the other discolorations would not be rectified. So keep that in mind.

 

[Cantabrigienne]

Yeah we’ll see I guess. They’re saying they really think it’s organic. The stain that matches where the water was puddling looks exactly like the other stains color-wise, so maybe from the pollen sitting there in the puddle while the pool filled?

 

[Cantabrigienne]

Just a quick update: they told me yesterday that the metal tests came back “off the charts” in our pool, so they put some kind of metal out treatment in the water. Not seeing any change so far today.

 

[JamesW]

I would probably try sulfamic acid (Jack's copper and scale stuff).

 

[kaciestutsman]

Did your problem get resolved? I’m thinking the same exact thing is happening to us!