Maybe you’re not a pool person. Maybe you’re a fish person. Tap water is toxic to fish because of the chlorine—it damages their gills. Letting the water sit out for 24 hours allows the chlorine to dissipate, making it safe for your goldfish, Bubbles.
I once made the mistake of pouring fresh tap water into my betta’s bowl. He gave me the fish equivalent of a side-eye. Now I prep his water the night before, and he swims like a king. Bettas don’t forgive easily.
How Long Does It Take Chlorine To Evaporate From Water | Detroit Chinatown
Same goes for your garden. If you water plants with chlorinated water day after day, the soil microbes can suffer. Letting a watering can sit out for a few hours before you sprinkle your tomatoes can make a noticeable difference. Your basil will taste less like a public pool. Promise.
