So I have a 29 gallon I’ve been running for 6-8 months with two angelfish and assorted live bearers and Cory’s. The angels got along great when I first got them, but they recently started getting more aggressive with one now spending a lot of time under a rock. (I knew this was a risk with two angels but hoped I would get lucky, and for a while it seemed I did.) I plan on getting a new 55 gallon tank this weekend. My question is should I just separate the two and stock the 55 gal around the single angel, or could I move both angels to the 55 and get 4-6 more and hope the schooling effect deters the aggression?