I have a reef gently acclimation box that I drilled holes into. Its sticks on the glass. I will feed them for a week or so to make sure they have a full stomach before being released.
I was a dirty pirate this time and didn't QT. Last time I did QT my Bellus Angel, but didn't medicate the fish, just watched it in a separate tank for about 6 weeks and got it eating all foods.