I'm in the process of getting a few fish tanks set up in the office. I was telling one of my co-workers my plan - get the tank into the office and the gravel set up, then get that tank cycled. Once the 10 gallon is cycled, start getting some smaller 5 gallon betta tanks up and running. her response - oh, just use tap water and the water conditioner. Sure, some fish will die at first, but then things will level out and it'll be fine.
sigh....