Not sure if this is the right place.....

Jul 6, 2008
7
0
Spring, Texas
#1
My IG gunite pool has gray marks in several place, the worst being in the spa. You can't feel anything if you touch them, but they are unsightly. I've attached a picture....any thoughts on what this is and how to get rid of would be appreciated.

Cindy
 

Attachments

frustratedpoolmom

LifeTime Supporter
TFP Expert
In The Industry
May 20, 2007
12,177
0
44
SWSuburban Chicago, IL
#2
Wow. I'm not sure.....

Someone will be along tho.

I've seen it suggested to rub a crushed vitamin c tablet on the stain and if it fades, the stains are metal. Also with a chlorine puck, let it sit on the stain and if it fades, the stain is organic.

Hopefully if there is another suggestion for you someone will chime in.....

Welcome to TFP!
 

czechscott

LifeTime Supporter
Jul 2, 2008
37
0
57
#4
I have the same thing on my steps. After reading one of the posts about the vitamin C tab, I found some and rubbed on some places and just let the others dissolve. I was amazed at how the area that I just let it dissolve became brighter and no more streaks. So... I am going to do the ascorbic acid treatment I read on another thread (getting rid of pool stains). Hope that it gets better.
 

meatloaf

Well-known member
Feb 10, 2008
373
0
Gilbert AZ
#5
czechscott
Where did you find info on ascorbic acid treatment? Could you please refer me to that post?
I wouldn't mind giving it a try.
Thanks
 
Jul 6, 2008
7
0
Spring, Texas
#8
Thanks to all for your suggestions...I'm on my way next door to borrow a vit c tab. I also posted this in the Algae part of the forum just to make sure its not algae, but this sounds like a consensus here...I'll try the vit c and then the AA.

Thanks again!