Well, I hope you can keep it in the tank for a while. If you order a Boaphile 421D, it takes a while for Jeff to build it after you make the payment. I'm not sure how long, but you may want to look for some used/sale enclosures if you think you need one fast. From the reading I've done the BCC's are supposed to grow slow, and then ultimately get a bit larger than the BCI's.