Just set up a 30 g, with live sand and dead rock. Added bottle of BIO-Spira. No fish yet. Should I expect to see any Ammonia, Nitrite or Nitrate readings at all? Everything is perfect right now (day 2) but I'm not sure if this is what I should expect or not. I was going to wait 3 weeks and add fish. Any advice? I've read all kinds of other posts about jump staring the cycle in various ways.