Ok, I have the 180 (72x24x24) stocked now with a Tigrinus and a Black Aro that will be here Friday. So, now I need another tank because I want a Juruense Cat and a Silver Aro, and my 180 is maxed with the 2 fish. So which tank is better for a full grown silver? here are the 2 I can easily get, 72x36x24 or 96x30x24 are either of these gonna cut it for a big old silver?