This AM, after allowing my TC to fall to .5 ppm, I added 4 lbs of Stain Out to my pool. Per the label directions, an hour later, I added two quarts of Metal Out. This afternoon, my pool is stain free.

Even thought the water test indicated no iron, my treatment for metal stains worked.

I do not know how I got the iron got in my pool, but I can only imagine I got it through the tap water, even though I haven't added that much water lately.