Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to take care of your carnival goldfish [title] Purchase the proper items to house your fish. [step] You will need specific equipment and tank dimensions to properly house your goldfish. By providing the right environment for your goldfish, you will help your new friend to be comfortable and healthy in its new home.

Ending1: [substeps] For the aquarium itself, you should try to find one that is around 20 gallons (76 l) in size. This may seem large for your new fish, but remember, it will grow over time. Ending2: You can purchase adult goldfish items at most pet stores. [title] Buy a tank that can withstand the cold. Ending3: You will also want to provide the correct equipment at all times to minimize your aquarium's chemicals and contaminates. [substeps] Include plastic bags, glass jars, water bottles, and gels that are specifically designed for fish. Ending4: [substeps] Get an aquarium heater that will keep the tank warm and damp to keep your water safe from harmful bacteria and infectious germs. Choose a tank that drains water easily and that has lots of humidity if you are coming into an aquarium that is dry.

Answer format: ending1/ending2/ending3/ending4