Sorry if this has been asked before. I had 37 gallon tank for 3 months and ammonia one day went up to 3.0, so I started doing partial water changes and cleaning everyday. Now the ammonia is low but Nitrite is3.0 (which I understand is a part of the bacterial cycle). But how long before the nitrite begin to go down and is there anything I can do to speed things up, becuase I lost a few fish. I use the topfin bacterial supplement each water change. The ammonia went up one day because of a dead fish that got caught inside decoration and it took 2 days until I found it.