Weird water params...???

These aren't weird parameters anyway. By tonight, your Nitrites are likely to be zero again. Nitrospira bacteria have a very fast reproduction rate.

That isn't denitrification. That's Oxygen being produced by cyanobacteria.

 

So this is normal?

 

And thanks inwall! Karma up!

 

Yes....anytime you start adding bioload to your tank, you're going to see a very small spike in Ammonia and Nitrite. Then the bacteria population will grow and that small spike will disappear quickly. That's because there is no such thing as a "cycled" tank.....There is the "initial cycle"....however, after that, the Nitrogen cycle continues 24/7/365.

 

Thanks for all of yalls help!