Invertebrates will die in hypo. Killed a whole bunch of them hiding in my substrate and rocks when I did my hypo.
Best to QT and hypo in a separate tank, and leave the DT with the substrate, rocks, inverts, coral and all sorts of critters fish free.
If you want to do hypo in your main tank, you'll have to remove all the coral and inverts, and be prepared to handle the die off of the critters in the rock and substrate.