@Elyse Douglas It’s a personal choice. I’ve never been much of a discus guy, but I adore larger fish, so that’s the route I’d go. Personally in a 300, I’d probably go with a school of 12 albino Geophagus Pyrocephalus, an Oscar, an L014 pleco, and probably an ornate bichir. However, you keep whatever makes you happy. Also Cory has said, after the 125 mark, he shoots for acrylic because it is lighter to move, and is a bit stronger. The only issue is it is much more expensive. If cost isn’t an issue, I’d go acrylic with everything. Good luck!