I have an evil Kole Tang in my 240 gallon reef that keeps killing my clown fish...and generally punking everyone else in the tank (minus the blue tang who is twice his size that just ignores everyone and does his own thing), i know he needs to leave the tank....but catching him is rather difficult, any ideas on the best way to get him out....other than a tiny little spear gun (i would prefer a method that he survives)