I set up my tank on Sunday night.(almost 7 days ago.) It is a 10g. I have been adding about 7-12 flakes of food a day plus small peices of algea tabs every day. The tank smells like ammonia but my strips still read zero?? I also added 3 days ago powdered BB. I plan to wait to add more powdered BB until my amonia is at 3. I am sure the feedback I am going to get is to test and wait another week, but why am I smelling amonia but not getting a reading?