Also, my male BCI is about 4 feet right now (1.5 years old). If the books are correct (and I hope they are!), he should top out around 5.5'. Right now I've got him in a 40-gallon tank. I went and got a 106 quart Sterilite tub thinking it would be bigger, but when I brought it home it was about the same size.
For those of you that have adult BCIs, what do you keep them in? He's okay right now, but I think the current enclosure will be too small in another year.
Very mellow dude, only gets aggressive when the rat comes out, otherwise a sweetheart.
Thanks,
Payton