CHoffman:
In a nice big tank like that, and your actual water pH range, you could keep good-sized schools of Rainbowfish (e.g. Glossolepis Incisus, M. Lacustris) which are peaceful and tolerate other species easily. They are slow growing fish that may not look particularly beautiful at the
LFS, but invest some time and it will pay off for you. Then you'll see who has the most colorful fishies LOL!
On the other hand, your pH is great for African Cichlids. There's a lot you can do there with so many different species -it is amazing the variety of African Cichlids. Some are aggressive but there are some peaceful ones too, some are mostly veggie eaters, some are territorial, but there are several tried and true combinations out there.
SteveAngela1 is someone who could give you a helpful hand if you go into Africans. Of course other fishlorians out there will help you as well.
Info on the following page is intended for cichlid stocking options in a 75gal tank but I figure it could be a starting point for you:
http://www.cichlid-forum.com/article...cutter_75g.php
Pepe
Santo Domingo