I have either a ocellaris or percula clown that I inherited with my nano. The people I bought the tank from only knew it was a "Nemo".

I also have a maroon in my 54. I was given 3 ocellaris clowns 5 weeks ago and they are ready to exit
QT. One of the 3 did not look good from the get go and died a couple of days after I got them.
So anyhow, now I need to decide what to do with the new fish. When there were 3 I was going to put them in the nano thinking that I would have 2 pairs even if the "Nemo" was a percula. But I am not sure how a trio would work. The clown is the only fish in this tank.
There is plenty of room in the 54 but Ms. Maroon Clownfish is MEAN. I have never seen her bite the other fish although she chases them if they get too close to her anemone. But, she bites the hand that feeds her - hard enough to draw blood! For what it is worth when I added my C. argi she did not bother it.
I'm so confused. Should I try adding them to one tank or the other? Should I move the "Nemo" from the nano to the 54 and give them the nano? Should I return the Nemo to the
LFS or take it to the
frag swap on Saturday and use the nano for the other 2?
Thanks for your input.