Kole tang is being an A-----E

[The Guy]

Originally Posted by emerald crab

2-3 weeks in sump detention usually does the trick. After that, he's the new guy in the tank and usually is well behaved.

Yep I've heard of that method and it would probably work, the problem is try to catch him in a 2 year old reef tank without having to take all the rock work out.
But I am happy to say he's has mellowed out towards the new flame angel now he's only a little bit of a dork like usual. My clown fish pair are now acting like jerks some what but nowhere near as aggressive as the Kole.