I have a 65 gallon deeper than it is long. Said tank is my pfp. How many angels can I keep in this tank? Tank is planted and has a fairly decent sized driftwood. We have some Cory cats already (about 20) as tank mates. And plan to possibly add some schooling types as well, maybe cardinal tetras but haven’t made a set decision yet. I’m thinking 4 angels? Any advice to make sure they don’t attack each other? We have some experience with aquariums but nothing this big or beautiful. Thanks!