First I tried 3 4" Jars in a 220, that didn't take long for 1 to kill the other 2, then I tried 4 2" babies in a 125 got one left, Not going to work save your money
Oh, and did I mention you should reduce the tank size to a 30g so they don't have room to form territories. That should work, but you could always add another jar just to help spread the aggression.