Thank you everyone for your kind praises.
The tank is what it is thanks to this Yellow Tang. I had a very nuisance macroalgae that I've tried a variety of methods to control. You can see the algae in the photo below; it looks like a thin, attached version of Chaetomorpha and nothing like hair algae or Bryopsis.
A Long Spine Urchin kept it under control to some extent, but the urchin got too big to be able to reach the smaller areas and it also took pieces of coral tissue off while it was grazing. A Tang was my last resort and I've talked about it, but never actually got one. Well, I came home to a Yellow Tang in my tank one night as a buddy of mine got into my room while I was away and replaced a Yellow Tang with one of my Dragonface Pipefish.
Needless to say, the algae was gone after a few days and I find little reasons to remove the Tang. It's the primary fish in the tank with plenty of space to swin around; it's a small Tang and the picture below can show you how big it is compared to the overall tank dimensions. I have pairs of Neon Goby to keep it clean, I feed it live and dried macroalgae dried algae as well as prepared omnivore diets, and I let it play with my algae scraper every few days. I find the Tang very content and healthy.
I hope I wasn't too defensive and my apologies to anyone who might be upset at my keeping a Tang in my system.