Aquariums by Size

A good guideline for choosing an aquarium is how many fish you want to keep. A good guideline is one inch of adult fish (not including the tail) for every 24 square inches of surface area. This does not account for the difference between slim and broad fish, but this rule of thumb provides a starting point and greater margin of safety than other methods.

This guideline, by the way, is for tropical aquarium fish. Cold-water fish, such as goldfish, need 30 square inches of surface area per inch, which takes into account their much greater body mass per inch and greater oxygen requirements.

What all of this means is that when choosing an aquarium, it is best to try to select the one that has the greatest surface area for a given volume. If you choose a tank shape that offers less surface area, take that into consideration when stocking it.

10 Gallons - 10 gallon tanks are a common size and good for beginners. Their compact size and shape make them easy to use in a bedroom or other small places such as a studio apartment.  These aquariums are not recommended for larger fish. Ten gallon fish tanks, on average, can hold up to eight very small fish (such as Neon Tetras) or two or three medium sized fish (Angelfish.) It's not a bad idea to start small. You can always step up to a larger tank if you are willing to invest the time and energy necessary for caring for fish.

20 Gallons -Twenty gallon tanks are a nice step up and can be easier to care for than the starter 10 gallon models. And price is also a good reason to start with a 20 gallon tank. Because these tanks are so popular, more of them are made and they are usually more affordable. Twenty gallon tanks are perfect for the beginning fish enthusiast.

30 Gallons - Thirty gallon fish tanks are great for the home or office. They’re not huge, but they are large enough to create a beautiful aquarium. You may find it more affordable to purchase 30 gallon fish packages tanks that come with the necessary accessories such as a pump, filter, and lighting. A 30 gallon tank can bring hours of enjoyment and relaxation for the enthusiast.

55 Gallons - Choosing 55 gallon fish tanks can be a great compromise between small and very large fish tanks. Fifty-five gallon aquariums are beautiful and even more relaxing than the smaller sizes, but there are several steps to follow to ensure a safe environment in which your fish will thrive. These tanks are not small, so you will need a sizable space. Bob's staff will help you outfit your tank and give you advice on how to set it up.

65 Gallons - The 65 gallon aquarium is a sizable one and it will make a dazzling conversation piece in your home or office space. A regular maintenance schedule is vital to keeping your 65 gallon aquarium healthy. Your fish will thrive in a clean, well-balanced aquatic environment.

75 Gallons - The 75 gallon aquarium is far too large to sit on a table or other piece of furniture. This sizable aquarium needs a stand that will support its 700 pounds or so and hold it securely. The stand for a 75 gallon aquarium should also house your aquarium supplies. Choosing a stand is far more personal than actually choosing the aquarium. Aquariums of the same capacity are fairly similar, while the stands can vary in style, materials, color, features and price.

90 Gallons - When it comes to fish tanks ... size does matter. With 90 gallon fish tanks you’ll enjoy an underwater utopia without ever leaving the house. Large tanks are not for amateurs, but they will dominate a room or decor. Ninety gallon tanks are especially suited for saltwater enthusiats. If you’re going to have a saltwater tank then the bigger the tank the better. Smaller tanks sometimes have a less stable environment and saltwater creatures can easily become ill and die from small shifts in their environment, such as temperature. So the larger the tank, the less the effects will be felt by the fish.

100 Gallons - There are many benefits to a 100 gallon fish tank, especially ease of care. Larger tanks require cleaning less often and the risk of damage from airborne toxins is greatly reduced. Larger tanks also you to keep a much larger fish population. These large aquariums are not only more beneficial to the fish, but also open up a world of creative design. Your fish will have plenty of room to frolic among your coral reefs or sunken treasure ships or whatever accessories fit your personality.

125 Gallons - These large and showy tanks can be a stunning addition to your decor, but they require more equipment, more knowledge and a larger investment. Our experts can help you navigate through all the issues associated with a thank of this size and send you home with everything you need to create a successful environment for your fresh or saltwater fish/.

200 Gallons - If you really want to impress friends and visitors, then there’s no better way to go than with massive 200 gallon fish tanks. And tanks this size mean healthier happier fish and less work for you in the future. Larger tanks allow for the dispersal of fish waste, resulting in less cleaning.   Larger tanks are also affected less by atmospheric changes and changes in the tank's environment such as temperature, chemicals, and bacteria. If you’re thinking big, think 200 gallon fish tanks. They’re a striking addition to any home or office.

1,000 Gallons - Purchasing and setting up 1,000 gal fish tanks can be a difficult process without help and know-how from our expoerts. Moving one of these tanks is incredibly difficult, even when empty. It is important to carefully choose an area where you would like to place the tank, considering all the pros and cons associated with placing it in a certain place before a final decision is made. Cost is another consideration. You can spend hundreds or even thousands of dollars buying, equipping and stocking such a large tank. Consider your finances and don't run out of money halfway through the tank-filling process.