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Also asked, can you put fish in tap water?
Water and Water Quality. Ordinary tapwater is fine for filling up the aquarium as long as youlet it sit for several days before adding fish (the chlorinein the tap water will kill the fish).
Herein, how long till tap water is safe for fish?
Will tap water be safe for fish aftersitting for 24 hours. By then, most of the chlorine should haveevaporated into the atmosphere, but it is better to use aconditioner or a de-chlorinator to ensure that the water is safefor fish.
You should cycle thetank for at least 2-4 weeks, test it to make sure it has nonitrite or ammonia in it, and then follow the steps for introducingnew fish into the tank.