Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to create a corn snake vivarium [title] Choose either a glass or plastic vivarium. [step] Plastic cages are sturdier and last longer than glass cages. They have grates on each side for airflow, and they can be heated from below using heating pads.

Ending1: Plastic vivariums, however, have very limited air flow, which can damage the vivarium during the heating cycle. [substeps] Glass cages are usually made of steel, stone, and porcelain. Ending2: Glass vivariums have a single flue near the bottom for ventilation. [title] Feed the snake your corn snake until he is 12 to 14 months old. Ending3: Alternatively, you can buy specially made glass reptile enclosures, or use a 40-gallon (151.42 l) aquariums. Make sure that you choose one made for snakes so your corn snake doesn't escape. Ending4: However, glass vivariums are less prone to ash build-up than glass cages, and are in more basic condition. [substeps] Glass cages should have ventilation holes near the top to keep dust and debris from flying in as the snake moves through them.

Answer format: ending1/ending2/ending3/ending4