Just so you know it's really hard to give up a tang once you have it. We had a Scopas tang that we tried to add to our 120 however our yellow tang did not like that at all (should of known better but I thought we could try) We ended up having to put the Scopas in our 30g
After a couple of weeks we convinced our friend with a 90g to take our scopas tang. We knew we couldn't keep him in a 30g and even though we can still visit the tang it was hard as hell to give him up
Just my .02 thanks Laurie