How to tell if tank has cycled ?

[wgama]

When setting up the tank (90gal+30gal sump) I added some water from my little tank,40 lbs of live rock from a fellow canreefer, it had been sitting in circulated heated salt water,and 15 lbs of rock from the store. I have been watching the tank closely and none of the little creatures on the rock have died. I tested and the water is: ph 8.4 nitrate 0 Ammonia .1 I also added various types of macro algeas. Diatoms are present and growing every day. Could it have possibly done a soft cycle?