Fish Squabbles

[Ryan]

You could take the yellow tang out for 12 hours then put him back in. Just leave him in a 5 gal bucket with a heater and air stone doing little water changes so amonia doesnt build or or u could put him in ur sump. This way when he enters the tank the CBB is the one in there first. You could also seperate them with some egg crate so the CBB can get through but the tang cant. (if the butterfly is small enough) JMO