I was not aware I did introduce ammonia.
If you have not yet added ammonia that's ok - but you will need to do this to cycle your tank. Is this your first aquarium? I might have suggested starting with a a FW tank, as they are often much more forgiving and low maintenance when compared with reefs.
Adding ammonia is something you do in fresh and saltwater aquariums to establish the beneficial bacteria that act as your biofiltration system. The reason one uses live rock is that the rock possesses some of this bacteria.
To build up enough biofiltration, you need to introduce a large enough source of ammonia. In general, the idea is to get your ammonia up to about 5ppm, measuring with a suitable test kit.
During the cycle, you will eventually see a spike in nitrites as the ammonia you added begins to be converted by the beneficial bacteria (BB.) Then, the nitrites will slowly be converted into nitrates. To get rid of nitrates, you actually have to do a water change (and from then on, water changes are how you get rid of nitrate.)
To actually introduce ammonia, two common methods are to add pure ammonia, or to let a whole raw shrimp decompose in your aquarium until you have sufficient levels of ammonia.
Good luck!