Thanks for the welcomes. My AUL will be grown out in a 220. From what I understand, this should last him a good, long while, as they are slow growing after 18 inches. But when occasion calls for it, I will examine my options: A very big custom tank (say, 400 to 900 gallons) is always a possibility...I have also thought about just a 300 gallon Rubbermaid stock tank.
I have to admit, I am getting rather antsy. I want this fish to arrive!