Hi folks, don't worry about this guy. I am helping him personally with tips and even measurements of water parameters.
I'm a marine aquarist from some years, organizing the activities of our local reefclub. So I consider myself a bit expert, enough to help him in case of need.
The tank is a nano, hard to keeping indeed, but actually it's stable. The initial cycling was very quick, due a mirate dosing of bacteria and live rocks from a well established aquarium. No new entries were made without doing before tests and evaluations.
About the flavescens, we know very well the situation: but the growing rate is't too fast, and into the surgeon family, the flavescens is one of fish with less swimming need respect the others.
When it's the time for the health of the fish, we can relocate without problem in a couple of minutes in a bigger tank.
