[header] How to care for a columbian boa constrictor [title] Get a large tank. [step] Adult boas should be housed in a minimum of a 120-gallon tank while babies can be housed in a 15-20 gallon tank. [substeps] You can buy or make a custom enclosure for your boa to provide it with the best housing possible. 
[title] Maintain two temperature sides in your tank. [step] Place your heat source on one side of the tank to provide a warm and cool side of the tank for your boa.