10 Gallon Fish Tank Weight | How Many Fish Can It Hold?

Dec 5, 2021

10 Gallon Fish Tank Weight

Aquariums can be astonishingly heavy when filled with water. But, as beginner aquarists, we often underestimate how much tanks weigh – at least I did. My first fish tank was 10 gallons big. So, it’s only fitting that I write on how a 10-gallon fish tank’s weight. 

Don’t worry! The article won’t just be limited to 10 gallons! We will cover a lot more. 

10-Gallon Fish Tank Weight

A 10-gallon (leader) aquarium weighs 11 lbs when empty. When filled, it weighs around 111 lbs. 

The standard dimension for a 10-gallon tank is 16” x 8” x 10” (L x W x H). 

Now that I have answered the main query, let’s look at the weight and dimensions for other standard aquarium sizes. Note that these figures are for glass aquariums. Acrylic aquariums usually weigh comparatively less than those made with glass. 

Oh, by the way, if you are on the fence about getting a glass aquarium or acrylic, this article might be helpful. 

Acrylic or Glass Aquarium? | 2022 Buyer’s Guide

How Much Does A 2 ½ Gallon Fish Tank Weigh?

An empty 2 ½ gallon fish tank weighs only around 3 lbs. However, when filled with water, the weight increases by 9 times – reaching 27 lbs. 

How Big Is A 2 ½ Gallon Fish Tank?

A 2 ½ gallon fish tank measures 12” x 6” x 8” (L x W x H).

How Much Does A 5-Gallon Fish Tank Weigh?

A 5-gallon tank’s empty weight is 7 lbs, and filled weight is 62 lbs. The weight, when filled with water, increases by almost 9 times. 

How Big Is A 5-Gallon Fish Tank?

A 5-gallon fish tank measures 16” x 8” x 10” (L x W x H).

How Much Does A 15-Gallon Fish Tank Weigh?

An empty 15-gallon fish tank weighs around 21 lbs. When filled with water, the weight increases by 8 times – reaching 170 lbs. 

How Big Is A 15-Gallon Fish Tank?

A 15-gallon fish measures 24” x 12” x 12 (L x W x H).

How Much Does A 15-Gallon (High) Fish Tank Weigh?

An empty 15-gallon (high) fish tank weighs around 22 lbs, whereas the filled weight clocks in at 170 lbs. 

How Big Is A 15-Gallon (High) Fish Tank?

A 15-gallon (high) fish tank measures 20” x 10” x 18” (L x W x H).

How Much Does A 20-Gallon (High) Fish Tank Weigh?

An empty 20-gallon (high) fish tank weighs 25 lbs, whereas the filled weight is 225 lbs. 

How Big Is A 20-Gallon (High) Fish Tank?

A 20-gallon (high) fish tank measures 24” x 12” x 16” (L x W x H). 

How Much Does A 20-Gallon (Long) Fish Tank Weigh?

A 20-gallon (long) fish tank weighs 25 lbs when empty. However, when filled with water, the weight increases by 45 times – reaching 225 lbs. 

How Big Is A 20-Gallon (Long) Fish Tank?

A long 20-gallon fish tank measures 30” x 12” x 12” (L x W x H).

How Much Does A 25-Gallon Fish Tank Weigh?

A 25-gallon fish tank weighs 32 lbs when empty. On the other hand, a filled tank weighs 282 lbs.

How Big Is A 25-Gallon Fish Tank?

A 25-gallon fish tank measures 24” x 12” x 20” (L x W x H).

How Much Does A 29-Gallon Fish Tank Weigh?

An empty 29-gallon fish tank has a weight of 40 lbs, whereas when filled with water, it weighs 330 lbs. 

How Big Is A 29-Gallon Fish Tank?

A 29-gallon fish tank measures 30” x 12” x 18” (L x W x H).

How Much Does A 30-Gallon Breeder Fish Tank Weigh?

An empty 30-gallon breeder fish tank weighs 48 lbs, whereas filled weight clocks in at 348 lbs. 

How Big Is A 30-Gallon Breeder Fish Tank?

 A 30-gallon breeder fish tank measures 36” x 18” x 12” (L x W x H).

How Much Does A 40-Gallon Breeder Fish Tank Weigh?

A 40-gallon breeder fish tank weighs 58 lbs when empty and 458 lbs when filled. 

How Big Is A 40-Gallon Breeder Fish Tank?

A 40-gallon breeder fish tank measures 36” x 18” x16” (L x W x H). 

How Much Does A 50-Gallon Fish Tank Weigh?

A 50-gallon fish tank measures 100 lbs when empty. However, when filled with water, the weight increases by 6 times – reaching 600 lbs. 

How Big Is A 50-Gallon Fish Tank?

A 50-gallon fish tank measures 36” x 18” x 19” (L x W x H).

How Much Does A 55-Gallon Fish Tank Weigh?

An empty 55-gallon tank weighs 78 lbs, while a filled one weighs 625 lbs. 

How Big Is A 55-Gallon Fish Tank?

A 55-gallon fish tank measures 48” x 13” x 21” (L x W x H).

How Much Does A 65-Gallon Fish Tank Weigh?

A 65-gallon fish tank weighs 126 lbs when empty and 772 lbs when filled. 

How Big Is A 65-Gallon Fish Tank?

 A 65-gallon fish tank measures 36” x 18” x 24” (L x W x H).

How Much Does A 75-Gallon Fish Tank Weigh?

An empty 75-gallon fish tank weighs 140 lbs, and a filled tank weighs 850 lbs. 

How Big Is A 75-Gallon Fish Tank?

A 75-gallon fish tank measures 48” x 18” x 21” (L x W x H).

How Much Does A 90-Gallon Fish Tank Weigh?

A 90-gallon fish tank weighs 160 lbs when empty and 1050 lbs when filled. 

How Big Is A 90-Gallon Fish Tank?

A 90-gallon fish tank’s measurements are 48” x 18” x 24” (L x W x H).

How Much Does A 125-Gallon Fish Tank Weigh?

A 125-gallon fish tank’s weight when empty is 206 lbs, and when filled is 1206 lbs. 

How Big Is A 125-Gallon Fish Tank?

A 125-gallon fish tank measures 72” x 18” x 21” (L x W x H).

How Much Does A 150-Gallon Fish Tank Weigh?

An empty 150-gallon tank weighs 338 lbs, and a filled tank weighs 1838 lbs. 

How Big Is A 150-Gallon Fish Tank?

A 150-gallon fish tank measures 72” x 18” x 28” (L x W x H).

How Much Does A 180-Gallon Fish Tank Weigh?

A 180-gallon fish tank weighs 430 lbs when empty and 1870 lbs when filled with water. 

How Big Is A 180-Gallon Fish Tank?

A 180-gallon fish tank measures 72” x 24” x 25” (L x W x H).

How Much Does A 225-Gallon Fish Tank Weigh?

An empty 225-gallon fish tank weighs 430 lbs, and a filled one weighs 1870 lbs. 

How Big Is A 225-Gallon Fish Tank?

A 225-gallon fish tank measures 72” x 27.5” x 27.5” (L x W x H). 

Recommended Readings!

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How Many Cichlids in a 55-Gallon Tank? Use This Simple Formula!

How Many Cichlids In A 40-Gallon Tank? Cichlid List For A 40-Gallon Tank

Does A 10-Gallon Aquarium Need A Stand?

Yes, although 10-gallon aquariums are pretty small, they definitely need a stand that lends sturdy support. A well-made cabinet should be enough most of the time. Avoid using stands or cabinets that are narrower than the width of the tank, as it will put extra stress on one side and cause leaks. 

Also, make sure to inspect the wood used to make the cabinet. That’s because some woods tend to swell when wet and can compromise the overall support. 

When exposed to water, woods like maple, spruce, and cedar will experience moderate shrinkage or expansion. However, mahogany, walnut, oak, and teak are incredible at resisting warping and shrinkage. 

Fish For A 10-Gallon Fish Tank 

Albino betta

If you choose the species correctly, a 10-gallon tank offers a plethora of possibilities for stocking beautiful and vibrant fish. However, smaller tanks are always more temperamental than bigger ones. So, there’s no room for errors. 

The fish that you select should be small, non-hyperactive, and definitely non-aggressive. 

Here’s our pick of fish that are suited for a 10-gallon tank. The fish we have picked can either be kept alone or as a part of a community. They’re also quite hardy and seldom require special care. 

  • Platies (2-3 inches)
  • Swordtails (4-5 inches)
  • Fancy Guppies (3-5 inches)
  • Betta Fish (2-4 inches)
  • Neon Tetras (1.5-2 inches)
  • Cory Catfish( 2-3 inches)
  • Zebra Danios (1.5-2 inches)
  • Dwarf Gouramis (3-3.5 inches)
  • Otocinclus Catfish (1.5-2 inches)
  • Ghost Shrimps (1.5-3 inches)
  • Dwarf Corydoras (1.5-2 inches)
  • Sparkling Gouramis (1.5-2 inches)
  • Kuhli Loaches (3-4 inches)
  • Pencilfish (2-3 inches)
  • Nerite Snails (up to 1 inch)
  • Cherry Shrimps (1.5-2 inches)

How Many Fish Can Go Inside A 10-Gallon Tank?

The answer is subjective. But start with adding one small fish per gallon of water. Add them in small groups every couple of weeks. Once the tank is matured and you’re confident about your skills, you can add two neon tetra-sized fish per gallon. 

Our Picks For A 10-Gallon Fish Tank Set 

Aqueon Aquarium Starter Kit 

Includes:

  • LED hood 
  • Submersible preset heater 
  • QuietFlow power filter 
  • Filter cartridge
  • Premium fish food sample
  • Water conditioner 
  • Fish net
  • Thermometer 
  • Setup guide 

Marina LED Aquarium Kit 

Includes:

  • Marina Slim clip-on filter with cartridges 
  • LED lighting for canopy
  • Fluval Max fish food
  • Fluval Aqua Plus water conditioner 
  • Fluval Cycle Biological Supplement 
  • Soft mesh fish net 
  • Aquarium care guide 

Final Words: 10 Gallon Fish Tank Weight 

Here’s a quick recap for you. A 10-gallon fish tank weighs just around 11 lbs when empty. But when filled, the weight increases by 10 times – it reaches 111 lbs. 

Although it’s a fairly small aquarium, to begin with, it still needs a durable and sturdy surface for support. A well-built cabinet should suffice. 

We often assume that small tanks are easy to take care of. But that’s the farthest from the truth. Small tanks are a lot less forgiving with rookie mistakes. They get polluted easily and fluctuate water parameters randomly. So, be careful what you’re signing up for! 

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rohit gurung author at urbanfishkeeping

About Rohit Gurung

My never-ending love and fascination with Aquascaping started when I received a red-eared turtle for my 10th birthday.

Apart from researching and writing, I spend hours gazing at my 3 turtles. And yeah, I bask alongside them too.