Nitrites too high!

[elliotulysses]

what kind of filter do you have?

if you don't have any kind of substrate there is no where for the helpful bacteria to grow and break down the frogs wastes.
other than the filter media.
99% of the bacteria lives in the substrate.

I have a tetra whisper ex20. I mean, there is a fair amount of decor and some large river rocks, from what I understood, bacteria also like to attach themselves too.
However, I do plan to go with a bottom layer of organic soil and put 2-3 inches in of sand so I can get some plants growing. But sadly, this has to wait another paycheck