The key here is to seed the rock. Here is what I would do. This is one of the safest and quickets ways to cycle a tank.
1.Buy some ammonium chloride from dr tims (nitrocycle from algaebarn is the same and brightwell also makes a version)
2. Dose the appropriate amount of ammonia (DO NOT OVERDOSE).
3. Dose nitrifying bacteria (Dr Tim's one and only, Fritz turbo start 900 and Microbacter xlm are the fastest generally speaking and I highly recommend these). Make sure to remove carbon or filter pads.
4. Test ammonia and nitrite. Once those are gone, dose ammonia again.
5. Test ammonia and nitrite, once they are gone, do a big water change (greater than 50% to cut the nitrates down)
6. Get a fish!
7. Seed with other forms of bacteria such as pns probio, dr tims waste away (the gel is very handy), eco balance, reef brite bacteria, or even coralline algae, etc. This will help combat the typical ugly phase that happens in new tanks. Diversity is key.
8. Finished!