If you don't keep adding ammonia, the bacteria that eat it will die and you'll have to start all over.  Jancy, what's the right thing to do if you haven't been adding ammonia and your nitrites are off the chart?  If Sumo does a very large water change to get the nitrites back on the chart, will that allow Sumo to test whether the ammonia-eaters are still alive?

Last Edited By: jhoyt Jun 18 13 1:06 PM. Edited 1 times.