Popular Sizes Of Aquarium Tanks



Nano Cube LED Aquarium - 28 gallon

When it comes to aquarium tanks, there is a seemingly endless number of options available regarding sizes and dimensions. The best way to narrow down your selection to something more manageable is to decide if you want a small, medium, or large fish tank! From there, it is a much easier task to see what exact size tank would best suit your needs and the desired location of the home aquarium.

Small
For the purpose of this article, small aquarium tanks will be considered to be those that are anywhere from 1 to 25 gallons. The best fish for these smaller fish tanks include bettas, guppies, tetras, mollies, some African cichlids, and many others. Small aquariums are also great homes for other non-fish pets including aquatic snails, frogs including the dwarf African frog, shrimp, and more! The small aquarium has special requirements including more frequent water chemistry testing because the delicate balance that occurs in a smaller aquarium is more susceptible to wide swings in the water parameters. Some selected fish tank sizes in this range include:

2.5 gallons = 12″ x 6″ x 8″
5.5 gallons = 16″ x 8″ x 10″
10 gallons = 20″ x 10″ x 12″
20 gallons (long) = 30″ x 12″ x 12″

Medium
Medium aquarium tanks are considered those that hold anywhere from 29 to 60 gallons of water. In such fish tanks, one can hold larger fish such as Lake Malawi cichlids, oscars, discus fish, and many other larger community fish. Medium sized fish tanks are also good candidates for becoming display planted tanks because the taller shapes allow for the care of larger aquarium plants. Some medium fish tank sizes include:

29 gallons = 30″ x 12″ x 18″
40 gallons = 36″ x 18″ x 16″
55 gallons = 48″ x 13″ x 20″

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Large
Large aquarium tanks are, for the sake of argument, bigger than 65 gallons. Fish tanks this size (and even the extra large tanks) are great for marine fish and corals. They can also be used to hold breeding pairs of many of the species that are kept singly in medium sized aquariums. Some of the more popular large fish tank sizes include:

75 gallons = 48″ x 18″ x 21″
90 gallons = 48″ x 18″ x 24″
150 gallons = 72″ x 18″ x 24″

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