A 20 gallon aquarium is a popular size for both freshwater and saltwater fishkeepers. But, before you buy one, it’s important to know not only the dimensions of the tank, but also how much it will weigh when filled. The weight of a full 20 gallon aquarium can vary depending on the type of water you use, whether or not you have rocks or other substrate in the bottom of your tank, and even the type of glass used to make the aquarium.

A 20 gallon aquarium generally weighs around 170 pounds when empty. This weight can increase when the tank is filled with water, decorations, and gravel. It’s important to take the weight of a full aquarium into consideration when choosing a location for it in your home.

Table of Contents

## How much your standard 55 gallon aquarium weights

## How Much Does a 20 Gallon Fish Tank Weigh Empty

If you’re planning on starting a fish tank, you’re probably wondering how much it will weigh when empty. A 20 gallon fish tank weighs about 40 pounds when empty. Of course, this weight will increase once you add water and fish to the tank.

The addition of water and fish will add another 10-15 pounds to the overall weight of the tank.

## Fish Tank Weight Calculator

If you’re thinking about getting a fish tank, one of the first things you need to do is figure out how much it will weigh. A full fish tank can weigh several hundred pounds, so it’s important to know how much your floor can support.
There are a few different factors that go into calculating the weight of a fish tank.

The size of the tank is obviously the biggest factor, but the type of material it’s made out of and whether or not it has a stand also play a role.
To get started, you’ll need to measure the length, width, and height of your tank in inches. Once you have those numbers, multiply them together to get the total volume in cubic inches.

For example, if your tank is 30 inches long, 18 inches wide, and 24 inches tall, its volume would be 12 960 cubic inches (30 x 18 x 24).
Now that you know the volume of your tank in cubic inches, you need to convert that number to gallons. There are 231 cubic inches in one gallon, so divide your total volume by 231 to find out how many gallons your tank holds.

In our example above, the 30-gallon aquarium would hold 54 974 gallons (12 960 / 231).
Now that you know both the size of your tank in gallons and how much each gallon weighs (8 lbs), simply multiply those two numbers together to calculate the total weight of your fish tank! In our example aquarium above ,that would come out to 439792 lbs (30 x 8).

Of course ,you’ll also need to add in the weight of any gravel ,decorations ,and water .
To sum things up :
1) Measure length ,width ,and height dimensions 2) Determine Volume

3) Convert Volume into Gallons 4) Calculate Weight

## 20 Gallon Fish Tank Dimensions

When it comes to setting up a new fish tank, one of the most important decisions you’ll make is choosing the right size. How big should your tank be? It’s a common question, and one that doesn’t have a single answer.

The best way to determine the appropriate size for your needs is to consider both the type of fish you want to keep and the number of fish you plan on keeping.
For most beginner aquarists, a 20 gallon fish tank is a good place to start. 20 gallons is enough room to comfortably house a small group of fish, but not so large that it becomes unmanageable.

Plus, 20 gallon tanks are relatively inexpensive and easy to find.
When deciding on the dimensions of your 20 gallon fish tank, there are a few things to keep in mind. First, you’ll need to choose between rectangular and cylindrical tanks.

Rectangular tanks tend to offer more surface area, which can be beneficial for certain types of fish that need lots of oxygen (like bettas). Cylindrical tanks, on the other hand, often look more aesthetically pleasing and take up less space in your home.
Once you’ve decided on the shape of your tank, it’s time to pick out some dimensions.

For a standard 20 gallon rectangular tank, the dimensions might be 24″ x 12″ x 16″. If you’re opting for a cylindrical tank instead, common dimensions are 14″ diameter x 22″ tall or 16″ diameter x 20″ tall. Of course, these are just general guidelines – feel free to adjust as necessary based on the specific needs of your aquarium setup!

## How Much Does 20 Gallons of Water Weigh

How Much Does 20 Gallons of Water Weigh? A gallon of water weighs 8.34 pounds, so 20 gallons of water would weigh 166.8 pounds.

Credit: www.thesprucepets.com

## How Much Does a 20 Gallon Tank Weigh Full of Water?

A 20 gallon tank of water weighs about 167 pounds.

## How Heavy is a 30 Gallon Fish Tank?

A 30-gallon fish tank can weigh anywhere from 60 to 180 pounds when empty. The weight will depend on the material the tank is made out of. For example, a glass tank will weigh more than a plastic one.

## How Much Does a 20 Gallon Hexagon Fish Tank Weigh?

A 20 gallon hexagon fish tank weighs approximately 41 lbs. The weight of a fish tank varies depending on the material it is made out of. For example, glass tanks are usually much heavier than plastic ones.

## How Much Does a 20 Gallon Fish Tank Hold?

Assuming you are talking about a rectangular tank that is 20 gallons in size, the amount of fish it can hold will depend on the size of the fish. A good rule of thumb is to allow 1 gallon of water per inch of fish. So, for example, if you want to put 20 one-inch goldfish in your 20 gallon tank, that would be fine.

But if you wanted to put 10 two-inch goldfish in there, that would not be enough space and they would likely die. In general, it is best not to overcrowd your tank as this can lead to health problems for the fish.

## Conclusion

A 20 gallon aquarium can weigh anywhere from 30 to 150 pounds, depending on the material it’s made out of and what’s inside of it. The weight of the water itself is about 8.3 pounds per gallon, so a 20 gallon aquarium filled with water would weigh about 166 pounds.