Hello. The vast majority of public water is fine for the vast majority of fish you'll get from the local fish store. So, there's no need to put anything into the tank water other than the standard treatment to remove the chemicals the public water people put into the tap water to make it safe to drink. Unless you're an experienced chemist, it's best not to get creative and try to change the chemistry of your tap water. Water keepers don't mess with chemicals. Just take a bit more time with the fish acclimation process. I don't think an hour spent to get our fish used to their new home is too much. Keep things simple and you'll be successful.
10 Tank (Now 11)
10 Tank (Now 11)