hey all i purchased a bci from a local guy who couldnt take care of the boa b/c he is leaving for the military and his mom wont take care of it. this guy really babied his snake and i think from the looks of it, its a female. i know that the only way to tell for sure is to have it probed but this ones got a longer tail, and no anal spurs. so im guessing female. i will have him/her probed soon. its only about 3.5 ft in length and in a 40br tank right now. ok so here is the thing. how long before i have to move her to a new cage? and is a 4ft better or 6ft? females get bigger so i was wondering what cage size is recommended. also, are tubs ideal for these guys as long as it has a tight lid on it? i will post pics soon. thanks.