Cycleing impatience, what gives!?

[Johnny Reefer]

This sounds like a classic case of an instant cycle. I doubt the rock was dead in the first place. Those pods had to have come from somewhere. Uncured maybe, but you certainly cured it over the 3 months (or whatever it was). I'd say you are not getting NH3 and NO2, because the tank cycled instantly. This is the result of there being enough nitrifying bacteria in the rock already, to deal with any ammonia. As for the NO3, I'd say you are not detecting a reading there because you're bio-load is extremely low right now.

Long story short, you're good to go, IMO.

Cheers,