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<\/a>1. Cost. <\/strong>Since there are many different factors that go into the cost of a fish tank, it should be one of the first things you consider when starting yours. Saltwater tanks will almost always be quite a bit more expensive than freshwater. Without even considering the tank itself and the upkeep, the fish in general will run you about more than double those of a freshwater tank. While there are some common types for less money, an average saltwater fish, say a tang or an angelfish, will run you about $50-60. At the higher end, saltwater fish can be priced all the way up in the hundreds. For the most part, besides a couple exceptions like cichlids, you can find many pretty, interesting freshwater fish for less than $10. Saltwater tanks have higher equipment costs as well, needing additional hardware such as stronger filters and protein skimmers, both of which could cost a few hundred dollars depending on the quality. Think about what you\u2019re willing to spend on a tank before making your final decision.<\/p>\n2. Your skill level. <\/strong>Undoubtedly, saltwater tanks require much more upkeep and maintenance than a freshwater tank. With freshwater, besides general cleanings, most of your upkeep will be partial water changes once a week. Typically, you\u2019ll replace 10-20% of water each week to control waste levels. With a saltwater tank, water changes are usually doubled. On top of that, you have to maintain a certain salt gravity, so during these partial water changes, you\u2019ll also have to add aquarium salt (that is, if you\u2019re not keeping corals in your saltwater tank). With corals, on top of everything else, you must constantly be checking the levels of calcium and zinc in your tank, as these are essential for corals to sustain life. Corals also require a special lighting system to photosynthesize. Keep in mind that all this extra upkeep also adds to the cost of your tank as well. If you aren\u2019t comfortable with the amount of maintenance a salt water tank requires, it may be a good idea to start with freshwater until you get the hang of things. Saltwater is difficult, but not impossible. Ask a pet care specialist at your local store for extra tips and pointers to make managing a saltwater tank easier.<\/p>\n