I am getting a 75 gallon tank either today or tomorrow and I'm using it to combine 3 of the smaller tanks that I have. (10, 20 and 29 gallon). I want to put all three of my angels in my big tank, but in the 20, I have six tiger barbs that really need to go in there too. So far the barbs have been pretty well behaved, but their only other tank mate has been a rubberlip pleco and one lone columbian tetra. Do you think that it would be a problem? Or should I not even try it.