update: I preped my holding bucket a few days ago by starting my bio-cycling by adding old tank water (stuff I tank out of my tank during water changes), adding some old bioballs, and old filter media. (you can see from the picture above) and now my ammonia readings have nearly become 0 again after spiking at 1mg/L this afternoon. my nitrites are astronomical but it looks like curing time for the rock is significantly reduced. I will still test constantly and wait for it to be comepletely cured before I use it but I wanted to ''cough... brag'' and approve of MD's Rock, or atleast my batch. Ammonia cycled after the first day is great!