Hi justintime, welcome to the forum.
It is hard to tell exactly time required to complete the fishless cycling or the time required in each stage of the fishless cycling due to the simple fact that there are too many variables such as water temperature, oxygen level, filter efficiency, etc. I could give you a wild estimation. It can take anywhere from a few days to 2 weeks or more from the moment you see nitrite increasing to the moment you see the nitrite dropping.
One thing I can tell you is that once nitrite start to drop (while you are still adding ammonia on daily basis), it means you are near the end of the cycling. Once you no longer get any nitrite or ammonia readings, the cycling is done.
You are welcomed to ask the questions on the forum. Smile
