A lot of people keep adult Bloods in CB 70/41 qt. tubs, but I feel that ultimately, they should have 4' x 2' x 2' enclosures as full grown adults. A CB 70 would probably be alright up to around 2 1/2 - 3 years... Also, Bloods, Balls and Boas all have different temperature and humidity needs. Ball and Boa needs are close enough that you can get away with having them in the same rack/on the same thermostat if you keep the temperatures at 90 degrees on the hot side. But Bloods need to be a lot cooler (82 - 85 degrees on the hot side) and need a lot more humidity...