Well after reading this from start to finish, it reminded me of my first tank which was also a Biocube. I miss it at times but nanos can be a pain sometimes. My biggest pet peeve was topping it off everynight or having a fear of burning out a pump.
But everything looks good. Love the LPS in the tank. IMO just need a nice acro up top to top it off lol.
I also wanted to mention if you can, get a ATO so itll help stabilize it as water evaporates, its so easy for water parameters to change.
But I did wanna comment on a few things.
First was the scooter blenny. We both made the same mistake. When I found out he was a dragonette....i was like what am I going to do. But I noticed one thing that gave me some hope. As I would feed my clowns, he would try to chase down mysis. So I started researching...and what I did was turn off all pumps during feeding and within 2 weeks he would zoom around the tank trying to catch the mysis. Scooters are very much more likely to eat prepared foods. Sorry for your loss. Id still have mine if he didnt go carpet surfing behind my 40 breeder. But that experience got me alot more knowledgable for the dragonette species and dont think I could own a tank with out one.
Secondly....the bristleworm topic. A 5 inch bristle worm isnt too big for that tank. Mine were close to a foot. But my hermits would force them back into the rock so I barely ever saw them.
Anyway....looks good. All thought....Id like to see more pics of that torch