Q: I got home from work last night and couldn’t wait to get into my pool to soak away the day, but when I got to the backyard, the pool water was green—not light green, either, but dark. I didn’t even ...

It was the summer of the staycation. In May 2020, Google searches for in-ground and above-ground pools spiked as families realized they weren’t going anywhere for the summer and sought to make the ...