Originally Posted by meowschwitz
Probably not cycled. Your tank will be cycled when you have some nitrates, but no ammonia or nitrites. Since you have no nitrates at all, I'm guessing that you never had any ammonia to begin with. You'll have to introduce a source of ammonia somehow like pejerrey suggested to get the cycle going.
No3 will tell you when the last stage of the cycle is happening.