Paulca916
Retired Reefer ;-)
They are indeed gorgeous fish. I hope Im not becoming too pessimistic, but I see a lot of aggression in this short video. All the circling is confrontation. I, honestly attribute this to being in a small QT tank, and hope it will resolve once they are in the big tank. However, I see the bigger concern being the two existing achilles in your tank. They will not like, nor tolerate, the additions, IMO. I really do hope that Im wrong.
I have a Purple tang and a Sohal tang in one of my tanks.
The Purple was there first since the Sohal was introduced there has been what looks to be aggression (circling putting fins straight out darting at each other)from the Purple towards the Sohal the Sohal pretty much just stood his ground.
Now 7 months later they both still acted up feeding time mostly and on various occassions but nothing harmfull.
I have fellow reefers with multiple tangs in thier tanks yes you get an aggressive one time to time but they seem to adapt.
You end up with a King of the hill Tang and the rest stay away from Him.
Good luck Ching I think it will be ok in a tank that big.
Once my 360 tank is ready I'm adding a Achilles and maybe a few others right now the 120 holding tank aint big enough for a 3rd Tang