How does chlorine work in pools and spas? Chlorine reacts with the water to create hypochlorous acid (don’t worry – it’s a weak acid). Ideally your pool will have a chlorine level of 1-3ppm (parts per million) which is completely safe for humans, but uninhabitable for gunk and germs because it destructures their cell walls and DNA which prevents them reproducing.
Doesn’t chlorine smell and hurt your eyes? Nope. If your pool is properly chlorinated, you won’t smell it and it won’t irritate your eyes. In fact, those can be signs that a pool doesn’t have enough free available chlorine or “FAC.”
Which chlorine should I use for my pool/spa? Glad you asked! There are a variety of options, each suited to different situations so we’ve developed the purchasing guide below to help make your decision easier