Red tailed tinfoil barbs chasing other fish?

Hi. I currently have a 56 gallon tank with..2 pictus catfish..2 rosy barbs..1 bala and 2 clown loaches. They have all done very well and the tank is extremly peaceful. However tonight I bought 2 red tailed tinfoil barbs and now the tank is so chaotic..the tinfoil barbs are chasing all of the fish around and I'm worried the fish will tire and get sick or die..I love all of my fish very much and I want a very peaceful safe tank for all of them...should I take the two tinfoil barbs back or should I give them time. I just bought them just a couple of hours ago. Thank you in advance and any advice would be very much appreciated.