In the beginning of that thread I was getting ammonia ...but as the thread progress in was not. There are even pics which show 0 ammonia.
Im gonna find out whats inn my water I am on city water so maybe chloramine.
Yes the tank isn't mature.
Militant potato. I always just dose for the entire tank. Maybe your right about the tap gonna look into it. I hope I am not going to have to go through a whole cycle again
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Unless you added dechlorinator after adding new water, the temp of the new water was within 2F of the tank water, and you didn't mix around the gravel I doubt you killed much if any bacteria.
Once a tank is established, I mix up and syphon gravel regularly, figure it keeps the bulk of the bacteria in the filter and not in the substrate among many other benefits.