Okay, here's my take on this whole situation... You're a flippin' idiot and you should NOT be allowed to own fish!
When you have critters that are not getting along, you don't add anything in. You give them a chance to work things out. They have to become secure in the new companions in the tank, without the stress of adding too many in such a short period of time.
You rearrange your tank to their pleasure. The tank is their home, not just for your personal viewing pleasure. They need to be comfortable in their home, no matter how long it will take to change it. If you care about your fish AT ALL, you will think of their comfort before your time.
If you don't have enough tanks of a decent size (45+ gallons, at least!) to separate your fish as needed, then don't go out getting more!
I have a Ornate Bichir, a Senegal Bichir, a Spotted Gar, and two Albino Bristlenose Plecostomus. I just spent yesterday (16+ hours) giving them a larger tank and arranging the whole thing so that they would be happy. Time should not matter where your fish are concerned. I view my fish as more than a "hobby." They are part of my family, important and loved. Maybe you need to reassess your "fish hobby," and get a different one!