Oreganoodle Posted December 27, 2021 Share Posted December 27, 2021 I started a fishless cycle a few weeks ago. I used one of the bottled bacteria, and saw ammonia ->nitrite but not nitrite->nitrate. Over the past couple of weeks I have bought a different brand bottle and two more of the same brand bottle. I've been daily adding up to 1 ppm of ammonia and watching it disappear; and finally the other day saw nitrites down to 0. Wahoo. So I brought the tank up to 4 ppm of ammonia to test if it was cycled -- but that was a week ago and the tank still hasn't handled it. It is down to somewhere between .5 and 1 ppm. Nitrites are at 0. Nitrates are between 80 and 160. Should I still just wait, or is the ammonia not decreasing rapidly at this point a sign that I've gone backwards? Link to comment Share on other sites More sharing options...
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