So there are saltwater fish tanks to fresh water fish tanks with so many in the middle. You have tropical fish tanks that have to maintain a high temperature and algae to the brackish water tank which has cooler water and a hint of salt for the more aggressive fish. Most pet stores have all the fish tank supplies you will need for any kind of tank as well as knowledgeable staff that can answer most any question concerning your tank, in addition they can help you get the right supplies such as a fish tank filter that will clean your tank.
There are 2 different kinds of aquarium fish tank, either glass or acrylic. You can use either one for any kind of tank you choose the main difference is weight, however the acrylic tanks also come in a wide range of shapes from octagon to triangle for corner tanks. If you decide to go with an unusual shaped tank make sure you have a fish tank stands to match or that will at least hold the weight.
Once you have decided on what kind of tank and for what kind of fish you want, you may want to check online for a used tank which can save you hundreds of dollars or more. You can try any classifieds for salt water fish tanks for sale or a 100 gallon tank and stand for sale, some of these might also come with the fish. If you end up with fish that you do not want most pet stores will also buy these from you for in store credit saving even more money. You can find great savings on fish tanks aquariums.