when the bacterial cycle is working properly ll the ammonia will have become nitrite, then turned into nitrate, when there is no ammonia, or nitrite, and a bunch of nitrate you can do a water change and add a few fish and CUC.
It's been 3+ weeks since the beginning of the cycle period. Things seem to be done since all that's left is nitrate. I'm going to do a water change when we come back from yellow stone. So far the is almost no algae since I've left the lights off for last few weeks. I plan to add the first fish then as well. More updates to come!