Q. I just had a swimming pool built by a local swimming pool contractor. The pool was filled only a month ago, and I noticed a rust stain on one wall. I guess the stain came from the iron rod to ...

Q. We have rust stains in several places in our pool, thanks to metal screws that fell into the water from a hole in my husband’s pocket. What can we do to get rid of the stains? A. When working ...