I set up a 28 gallon nano cube 7 days ago. I’m using cured live rock, live sand, water from lfs, and used ceramic disks that were in the tanks at my lfs. I added live bacteria and a damsel 1 day after setup. I’ve been testing everyday for ammonia and there hasn’t been any present. Is it possible that the tank is already cycled? Also I’m not getting any reading for nitrates / nitrites