I don't have the patience to respond to everything wrong with this post... I'm out.Is nitrite not a form of nitrogen? If you add nitrogen then you'll have Instantly added nitrites. The bottle bac we buy are used for fish systems so they contain what's necessary. And like you stated it's so fast that dosing for 7 days like the Op stated would indicate a clear nitrobacter cycle. I've personally cycled a few tanks when I broke down some other setups I had. Used bottle bac and had a full cycle in 4 days. Not 1 fish loss so yes its that fast. I'm not stating he's fully cycled what I am stating is that his nitrosomonas aren't established which is why he has a safe ammonia level of .05. Then the bottle bac states to add fish slowly So I'm mainly going off the instructions of the bottle and it's clear as day to me where on the other hand your first post on here you were confused. I'm 100% capable to accept if I'm wrong and learn from it but I won't jump on a post unless I have lots of knowledge about it.