so, hi again. tonight hits my 17th day of cycling, so I tested my parameters. I've been testing every 3 days or so. 3 days ago, my tank finally showed a little spike in nitrate and my ammonia and nitrite declined a little bit, but I tested tonight and got something unexpected. My ammonia and nitrate was the same as last test, but my nitrite declined to 0. Is this normal? maybe I'm testing too often and over thinking things?