Help on keepin a mandrin in a 29g biocube. Note: im looking for a challange

[Hail_Ceasar]

Ever since i first saw one i have always wanted to keep a mandrian fish, but never have for fear of killing it. I know full well the difficulties in keeping one. But my tank has been up for about a year and a half now so i would def say it is mature. I have always oved the challange of having a reef tank, some how all the hard work i put into it just makes it that much more enjoyable to look at. And i have had great luck only ever losing one fish that commited suicide on the carpet

Anyways i really think i am up for the challange of trying to keep a mandrin in a small tank. To try and wean it onto frozen food and supplement my tank with extra pods if need be. If i fail and it starts to get skinny i will just return it to the fish store lesson learned. I was hoping someone might have some advise on what exactly to feed it once it starts eating frozen, i know mysis simply wont do the trick nutritionally in the long run.