Hello, this will be my first post. These are my test results:
The water is clear.
When opening the pool this spring we had pond water. Throughout the winter sometimes smelled like rotten eggs. The pool is 4' deep all one level and you could not see the bottom. The color then was green. I used bleach like I always do in the spring and changed the water to opaque color and cloudy. Added powder shock to the pool and after several days we had clear water. I then balanced the pool and shortly there after the yellow to light brown/tea bag stain showed up on the steps and in the corners. Eventually some on side walls.
I used vitamin C to determine what to use and yes the Vitamin C worked. I used 1.75 lbs of Satin Free and it immediately got rid of the stain. Followed that with a half of a bottle of Metal Free. It's been about two weeks and now it has come back. Frustrated I took a sample in to check for metals. Results were .0002 on copper and big 0 on iron. That's the confusing part cause I am treating it as a metal stain but no metal is showing on the test. Getting ready to treat again with Stain Free followed by a full bottle this time of Metal Free.
Bottom line is why has it returned and what else can be done? I don't wont this expense of continuing to treat it. I want the problem solved. Please Advise.