Want a weird experiment? Buy three types of bottled water. Test their pH with a kit from the pet store.
You will find a massive difference between brands. Some are acid rain. Some are liquid chalk.
Your fish will silently judge you based on your choice. They have no thumbs, but they have opinions.
A Funny Thought Experiment
Imagine you’re a neon tetra. Your owner brings home a bottle of “Fiji Water.” It costs $4. You don’t care.
Now imagine they bring home tap water with a drop of dechlorinator. It costs 1 cent. And you love it.
The irony is real. Fancy bottled water is often worse for fish than treated tap water. They prefer the cheap stuff.
