Q: We have a pool and it looks terrible. In a short period, the water has gone from clear to yellowish, and, of course, nobody wants to swim in it for fear of catching a disease. What can I do? A: It ...

Q: I have recently had a medium-sized pool installed in my backyard, and my family and I have used it a lot already to cool off from the summer heat. However, the water is starting to look a little ...