Yes, I have a radion on this tank, the tank is definetely too big for 1 radion, but fortunately I decided to keep less sps so that I can cut the costs of running the tank by having to dose less, and also leave the electricity bill lower, although I had originally thought of adding 3 t5's around the radion in a triangle. Only keeping a few sps and mostly lps and softies allows me to feed more too. Yeah I rescued that sailfin as he hadn't eaten for over a week when I got him, and believe it or not he was free. If he gets any larger I may take you up on the offer, because the tank is small for such a large fish. I designed the rockwork so that he can swim all the way around the center througgh the two caves. The purple tang is around 5 inches for reference. Lol I'm excited to see the tank once all the fish are settled in and not scared to death of him, I have 42 in there now.