10 Gallon Fish Tank Dimensions Explained

If you are thinking about having an aquarium or a fish tank in the house then there are certain things that you have to be sure of! 10-gallon fish tanks are very common and are set up in low lights.

The common species that are kept in the tanks are Amano shrimps, Mystery snails, Nerite snails and Ivory snails, etc. Living plants such as Anubias Barteri, Moss Balls, and so on. But before buying one you need to know 10 gallon fish tank dimensions so that you know where exactly you can place it in your house.

Basic Idea About 10 Gallon Tank

The 10-gallon fish tank or aquarium kit is available in the market and it is quite popular. As a beginner, you have to make use of the 10 gallons aquarium which is smaller and hence easy for you to maintain.

The aquarium, however, has a very small size and hence the water gets polluted easily. Hence you have to be very careful about maintaining the hygiene of the tanks.

The ten-gallon table has several advantages like the set-up is completed and you get the entire readymade setup home.

Another benefit of having a ten-gallon tank is the fact that you can easily find them at the local stores and the fishery shops.

How Much is 10 Gallons?

1 Gallons = 3.78541 Liters

10 Gallons = 37.8541 Liters

10 Gallon Tank
10 Gallon Tank

Materials Needed for Making a Fish Tank

The ten-gallon aquarium kits have the following structural setups that are made. They are as follows:

  • One glass 10-gallon aquarium;
  • One plastic tank cover with a socket for an incandescent light bulb;
  • One small plastic in-tank aquarium filter and some sample filter media;
  • A few feet of air hose
  • An air pump;
  • Some aquarium gravel;
  • A small sample of fish food;
  • Samples of aquarium dechlorinator and/or water conditioner; and
  • An information booklet

An aquarium stand is also a very important factor that you need to purchase. The average weight of the tanks along with 10 gallons of water is equivalent to 111 pounds. The weight of the gravel and the stones are also included in the tanks.

Hence, the normal stand will easily break and the plastic stools may also break. Hence an aquarium stand is very vital for making the ten-gallon tank stand sturdy and strong.

Also read: How Long is 20 Feet?

10 Gallon Fish Tank Dimensions

The dimension of the 10-gallon aquarium set is what we need to learn here. The 10-gallon tanks are small and have the following dimensions:

20.25” x 10.25” x 12.625”

Length = 20.25 inch

Width = 10.25 inch

Height = 12.625 inch

10 Gallon Fish Tank Dimensions: 20.25” L x 10.25” W x 12.625” H

However, since the set-up is very small, certain constraints are taken into account-

  • pH changes
  • Overfeeding
  • Overstocking
  • Nitrate Buildup

The Temperature of the Water

Fishes are cold-blooded species and hence if there is even a minor change in the temperature then the fish can land in distress or disease.

When you are making a water change in these 10-gallon water tanks then the partial change in volume plays a very significant role.

The temperature of water displaced and the temperature of water in the tank must be the same otherwise it creates hassle.

Overstocking and Nitrates

Overstocking and overfeeding crowd the water and reduce its productivity. The water quality deteriorates and the fish have to live in an unhealthy environment. The nitrifying bacteria get limited space for growing as the space available on the glass surface is less.

Nitrate buildup

The less quantity of water in the tank increases the concentration of the nitrate in it. The high level of nitrate in the water is detrimental to the lives of the fish. This results in the cloudy water of the water tank.

Also read: How Many ml in a Gallon? (Millimeters to Gallon)

What is the filter option for a 10 Gallon Tank?

Setting up a ten-gallon filter tank is easy for hobbyists but the real problem comes when the fishes are dropped into the water. They end up causing overcrowding and filtration resulting in health crises and finally the death of the fish.

The plastic in-tank filters are the most common ones. HOB filters are also used for the 10-gallon fish tanks. The in-tank filter tank works when the number of fish in the tank is less but when the number of fish is more the HOB gives a better performance than the former. You can buy these HOB filters from online shopping stores or pet shops and fish ornamental fish stores.

Interesting Facts

Goldfish must not be kept in small gallons like the ten gallons. This becomes very suffocating for the little goldfish as there is a crisis for water circulation. The water quality can deteriorate readily and this may also lead to the death of the fish.

Frequently Asked Questions About 10-Gallon Tank
Frequently Asked Questions About 10-Gallon Tank

Also read: Explained: 27 inch Monitor Dimensions

Frequently Asked Questions About 10-Gallon Tank

1) What is the dimension of the 10-gallon water tanks?

The size of the 10-gallon water tanks is 20” L x 10” W x 12” H approximately. This dimension excludes the canopy, lights, and other equipment.

2) What is the weight of a standard 10-gallon fish tank?

The weight of the 10-gallon fish tanks keeps varying. The acrylic tanks are lighter than the glass tanks of equal capacity. On average, we can say that the weight of a 10-gallon fish tank is 11 pounds when it is empty.

When the tank is full then the total weight will be 100 pounds. The weight of one gallon of salty water is 8.5 pounds. If more gravel and stones are added to the tank then the weight of the tank will gradually increase.

3) How many fishes can fit inside a 10-gallon fish tank?

The small fish which are about one inch can be kept in tanks of this size. About five to six such fishes can be fitted in the 10-gallon fish tank. Smaller fishes like the guppy fish can also be kept in it the number of fishes, in that case, can increase.

4) How to find the volume of the tank?

The dimension of the tanks is 20” x 10” x 12”. You have to simply multiply the three digits and divide by 231.


20x12x10 = 2,400 then divide by 231 = 10.38 gallons.

You may use the same formula to determine the volume of larger tanks as well here.

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