Tank Cycling Question

[j83]

Hey Folks,

I am setting up a second reef tank and am waiting for it to cycle. I have used some LR from my current tank as well as some cured LR from the LFS - about 40-50 lbs in total so far. Upon doing tests a few days ago it looked as if my tank started to cycle (the ammonia was high, and I was also detecting nitrates - is the nitrates present normal?), today I tested the water again and the ammonia is zero, nitrite is zero, and the nitrate is the same as it was a few days ago. As it looks right now, my nitrite cycled in one day, is that possible? Is it possible that the tank cycled in less than a week? I put all the rock in last saturday. Any other suggestions as to what is happening?

Thanks is advance!