Ok, so I just filled my tank, let it sit there for a couple of hours, and then tested the params. I came out with .25 ppm Amm, 0 Ite, and 0 Ate. There's nothing in the tank but sand, water, heater, and a filter with new media.
If that is so, you have an ammonia source in your tap water. Ensure you use a water conditioner such as Prime to bind you ammonia to a non-toxic form but still available for the bacteria.
