No like Bectan said you need to test for nitrAtes the last stage of the nitrogen cycle. When you start to add fish GO SLOWLY no more then 1 every two weeks this will give your bacti base time to catch up to the new bio load.
I know it's hard but the worst thing you can do is rush things in this hobby
It's taken me 13 years and i still dont have my tank where i want it to be
Most people create their own problems by not following the basics and refusing to stock appropriate to their system. Gregcoyote 2013
SPS = Stability Promotes Success