Rust like stains on stainless steel walls

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SCOTTB

New member
Aug 29, 2012
4
Hello,

We lost a lot of water possibly a stuck hydrostatic valve problem over the winter. Rust stains were all over the stainless steel walls. Pool is about 30 years old. Walls have never been super shine since we’ve owned this for the last 20 years but never had this problem before. Nothing seems to take off the stains, scotchbrite, rust removers, elbow grease…any thoughts anyone know about painting stainless. Thanks!
 

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ajw22 said:
You don’t remove rust, you chemically neutralize it and then paint it.

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Thanks for the info. So neutralizing then painting should work for Stainless steel?
 
Try rust neutralizer in one area and if it turns black then it is working and neutralizing rust.
 
SCOTTB said:
Thanks for the info. So neutralizing then painting should work for Stainless steel?
Click to expand...

It will buy you some time ... maybe another year, maybe another 5 years ... hard to tell. Once pool walls start to rust, they are deteriorating. There could be way more rust on the side you can't see facing the ground. But neutralizing and painting the steel walls will get you back to going again. If you haven't been doing so already, start saving up for a full pool renovation because 30 years is winning the lottery in terms of pool life. Your pool is in decline so start planning for it now.
 
Either there is iron contamination or there is an issue with pool water chemistry that is causing the corrosion on the stainless walls. It could also be the water has evaporated and in doing so has increased the concentration of chlorides to the point where its attacking the microstructure of the stainless locally.

To properly address this for stainless, you will need to pickle and passivate the walls to remove the contaminates and rebuild the layer of oxidation that protects the underlying surface. See this link that describes what i am talking about. What Is Pickling And Passivation Of Stainless Steel?
 
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