Hi bro, as I had no time to cycle, I let the system run for a day, added about 6 fishes on the 2nd day, 6 fishes on 4th day. By one week, tank was fully stocked. I was lucky that the system was able to handle my bioload. No fish or coral die during that period. infact they do better than in my old system. I believe the matured live rocks, bacteria and nsw helps. This is the 2nd time I actually did not cycle my tank.