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 ...

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: My pool pump quit while I was away on vacation. The pool developed a severe algae problem, and the stains won’t go away even after scrubbing. Would an acid wash remove the stains? I have an ...