No way! It just means that you are past the ammonia spike and into the nitrite spike. Believe me, I was given some pretty terrible advice from Petsmart when I started keeping fish, and you are getting the right advice here. I wish I had known about AA when I started so I could have saved some of mine. Once you keep fish for a while, you will start to notice that you know way more about fish than most of the people at Petsmart.Man i just went to pet smart, and they told me that my water has no ammonia in it , and that i do not need to do any more water changes, they said thats why my fish are so stressed? I dont get it, i have so many people telling me different things?