
8 posts? Welcome to Fishlore, sometimes we overlook doing this, and just want to tell you all questions are gladly answered here, 'if we can'.
You sound like you have read a lot about setting up your tank, but what kind of testing equipment did you get?
So what ARE the readings for,
Ammonia:
Nitrites:
Nitrates:
What temperature is the tank?
How did you cycle your tank?
Fishless, or what did you use?
After the cycle was complete did you do any water change before adding fish?
It sounds like the fish in question is stressed out from something, I would like to be able to have the answers to the above to help you.
