if you are saying your luck is a fact then I call it BS. Don't bring some thing that got a lot to do with luck and say it will happen.Actually I agree with him as well, I had a Florida Gar in a 180 with two Peacock bass. Yes, the tank is large, but its not really that big. I think that Cichlids and Gars are fine together, I even have done that Florida Gar and Peacock Bass combo in the far past in a 120.
any people in here keep saying that they kept gar with non recommended fish for a years or two with no problem. Then I tell you this, I brought 6 of my gars and put in a 110 gallon tank that have some pleco in it for a couple days due to the extreme cold condition that froze the pond of to 3'' of ice. Only in 3 days, my first gar jump out and die frozen with a belly that have been suck out to the scale. I immediately bought some 27 gallon plastic tank to make them into hospital tanks and keep them there until they can heal off completely. After 10 days which is yesterday, I lost my smallest gar that is 20 inches big(the first on that I lost was 22''). Right now 4 other gar seem to do a bit better but the worst one is my 24 inches male that also is my first gar I ever have. He has lost some scales on the bottom that leave his meat expose and my guess if thing go bad he is the next one to die.
People seem to never learn unless those thing happen to them and they paid a big price for keep doing the wrong thing.