my guess is that it is not quite done cycling. Leave it alone for about 1 week to ten days and check again. A lot of people test parameters daily when cycling, I just leave it alone for 3-4 weeks and then do one test. There isn't anything to harm in there so it will be fine.
Patience is the number one problem with this hobby. We all want our tanks to look amazing and it just takes time. Hell, I love my SPS corals and they drive me nuts with how slow they grow, 3 nubs on a milli in 4 months? CRAZY!!! But, this is the nature of the hobby. You will have your own learning curve and it will revolve around patience. I have killed more things not being patient and not listening to someone wiser about marine tanks than I care to admit. Good luck
-Doc