They need a minimum 55g tank (possibly 75g if they grow past the 10" mark) with sand substrate, and hiding places. This is my favorite fish and I highly suggest them, hardy, eat anything, active, and a monster.
Here's when I first brought home the little girl at 2.5-3" on 9/22/11 a little over 7 months later, at the 10" mark and THICK. I'll try to get some good pictures in a little bit.