Hi, I'm new to the pool world as of this summer- bought a house with lovely in ground pool. The only negative has been the brown metal staining all over the pool lining, steps, skimmer. After reading tons and tons of great advice online, I was able to successfully get rid of the stains using Stain Free and Metal Free, which actually was quite amazing. However, I had very cloudy, milky, bright aqua water for several days after I added PH+ to try and re-balance the water. In hind sight I may have left it alone to see if the ph came up by itself, or raised it more slowly. After about a week after treatment, as directed by all the advice in the forums, I shocked the pool manually with chlorine rather than using the superchlorinator on the salt water generator. It took a few days, but the water finally cleared. I was happy that the water was clear, and balanced almost ideally, but disappointed that the staining re-appeared. I did add another bottle of metal free shortly after the stains re-formed, but it didn't help. I've had our water tested and there is iron or copper in it- not sure how much faith I put in those pool store tests. I am looking for a way to battle this without having to constantly add ascorbic acid and lower the chlorine levels, etc throughout the pool season- the whole process was aggravating and exhausting, not to mention expensive! If I can get rid of the stains one more time and keep a maintenance treatment with Metal Free throughout the summer, I will do that. The questions I have- should I filter the hose water any time I add water? Is the staining going to happen every time the chlorine levels get high from shocking? Should I attempt to remove the stains again before closing out the pool, which is happening quite soon (Nova Scotia), or wait until the spring? Thanks so much- I want next summer to be a lot easier when it comes to pool maintenance!