See post here for more info. I'm on week #3 of cycling my 32g. I had ammonia, it was going away. I had nitrites, it left. I have nitrates like crazy and likely need a water change to bring them down. BUT - why is my ammonia level stagnating now, without adding any new source of ammonia (I'm using household ammonia) ? I have a couple pieces of driftwood in the tank - the pH is very low, maybe 6.0.