This covers every aspect of tank cycling.
http://reef2reef.com/threads/new-ta...d-cocktail-shrimp-live-rock-no-shrimp.214618/
My advice is simply:
Do not buy or use an API ammonia test kit, google search returns show why. Use a brand that shows to be consistent, Red Sea, or Hanna, or salifert.
Nothing other than a digestion test tells you where you are in the cycle.
Every tank I have ever put online did not cycle, I purposely made it that way or we can choose to cycle, the point is biology is a for sure, non guess factor and I made that thread above to end guesswork. You can choose to cycle or not cycle, and when fish go in is based on a digestion test or from visual biology per above.
New reef keepers absolutely shouldn't be told to wait an arbitrary time frame to add something. When in doubt, a digestion test is exact.
The best way to start is to dose less and chase target parameters like pH and calcium exacting levels -less- to none when new, relying on large water changes initially as this balances well enough and gives you practice accessing the tank. As you move on with maturation you can change less and dose more. My opinion here. The link on cycling is not an opinion lol its testable.
The number one intent of that thread above is to prevent people from putting rotten shrimp in a tank full of live rocks, it just took two pages to explain why.