What is the difference between chlorine and bromine?

If you're standing in the pool supply aisle staring at rows of white buckets, you're likely trying to figure out what is the difference between chlorine and bromine before you drop a bunch of money on the wrong one. It's a classic debate for anyone with a pool or a hot tub, and honestly, picking the wrong one can lead to some itchy skin or a green-tinted swimming experience that nobody wants. While both chemicals are designed to keep your water from becoming a science experiment, they go about their jobs in pretty different ways. ...

May 16, 2026 · 7 min · Kathryn Gangopadhyay