Hi
Nice find. Good luck with it.
Just a word of advice though -- it's not in the best spot in your tank, and you may find it will wander as a result.
H. magnifica belongs on the top of the reef, that's where it wants to be and that's where you'll always find them in the wild (in fact, they may even be above the tideline during extreme low tides). They want as much light as possible so they will gravitate towards a light source, and they want to be in surging type current. Basically, a lot of light, a lot of current, a fair amount of feeding, and top of the reef; are absolute musts for this species.
Once again though, nice find, and good luck.