Q. We have a crushed aggregate surface on our pool, and it had been perfect until last year when a few rust-colored spots started appearing. This year, the stains have gotten much worse, and our pool ...

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 ...

Question: After every heavy rain, I find dozens of fat earthworms drowned in my pool. If I don’t vacuum them out immediately, some stick to the bottom and leave a stain that won’t brush out. How can I ...

Question: I have black stains on the pebble surface of my pool. My pool-supply store suggested using a metal control to remove the stains, applying an algae preventer and finally, rubbing a chlorine ...