Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to set up an aquarium [title] Decide if you want a freshwater aquarium or saltwater aquarium. [step] There are many differences between having a freshwater aquarium versus having a saltwater aquarium. These differences include how you initially set up the aquarium and all ongoing care, maintenance, everyday chores, and costs requirements.

Ending1: Adding saltwater to your aquarium will actually be cheaper than having to buy new fish for care, maintenance and home renovations. [substeps] Check all the water levels in the home. Ending2: Additionally, you may find it easiest to set up a saltwater aquarium once you have decided what type of fish you would want. [substeps] Saltwater aquariums are small fish that can comfortably sit at a height of 30 to 50 feet (69.1 to 64.8 m). Ending3: There are several key issues you will need to consider while you choose : [substeps] Saltwater aquariums cost more. Saltwater aquariums have specific water requirements that need extra tools and equipment to maintain it, as opposed to maintaining a freshwater aquarium. Ending4: [substeps] Freshwater aquariums typically cost between $4.25-$4.6 usd and are generally kept for the first 2 years of aquarium life, but can last up to 2 years. Saltwater aquariums generally cost about $4.75 usd or less.

Answer format: ending1/ending2/ending3/ending4