I usually frag with more than one polyp... survival rates are dismal otherwise.... even two polyps is not worth it to me.
I also leave the plug where the colony was originally. It is already stressed with the fragging... but also adding different lighting and flow could stress it even more.
I know you're all about the SPS Wizard, gotcha covered. This is just for zoas. Esacjack, why do you think I am selling corals... honeymoon man! My wedding is in 4 weeks!
I accidentally left my light on overnight and all my xenias disappeared the next morning. I did lose one chalice from it but it took care of my xenia problem. Haha.