I have a leopard bush fish and a geophagus braziliasus that are prob close to 2 inches in a 20 long to grow out. I would like to put then in a 75 so I can start to redo the 20. My main concern is my 7-8 inch delhezi, iv never seen him be aggressive but that doesn't mean he wont. I also have a 6 inch senegal, this guy's given me problems in the past he tried to eat a small banjo catfish and he ate a few clown loaches after they died. Also a large eb acara but I doubt that would hurt anything. Anyway do you guys think they would be okay? Iv also been eyeing a large piece of driftwood at my lfs that is covered in java fern so maybe I should get that and add some cover? Thoughts?