Copper/Iron other metals??

Jul 3, 2008
How does one test for metals like iron and copper if the pool guy's test keeps showing 0ppm?
(I have a previous post titled "First Timer needs guidance" and am dealing with those issues.)
But I'm starting a new one because I believe I have a metal issue since my pool equipment is now more stained with a rust-brown color.
I don't just want to add chemicals like Metal-Out without knowing prior and I haven't found detailed info discussing metals.
Thank you all. We can't make it without you.


LifeTime Supporter
Platinum Supporter
TFP Expert
May 7, 2007
Silver Spring, MD
If you have stains, try holding a vitamin C tablet up to the stain for 30 seconds. If the stain disappears in that spot then it is most likely a metal stain.