I have been out of the hobby for a few but have established a 50 gal. with a few small cichlids, a few tetras, a couple gouramis and a 16" plecostomus. I don't mind losing anything but the Pleco and my thoughts are of a cichlid tank. Any thoughts? My Cichlids are malawis does this mean I can't introduce any tangs or Victorias? Could use some good advice.