Shirlie is a fish and aquarium lover through 16 years of suffer writing on the topic of raising and keeping fish in ~ home.

You are watching: How much does a 40 gallon fish tank weigh


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little Aquariums

Contrary come what you might think, small aquariums space not recommended because that beginners. These tiny environments have the right to be an extremely temperamental, for this reason a tiny change in the chemistry the the water, like ammonia or pH changes, deserve to have a big impact.


If you do decide to keep a little fish tank, save in mind that it will have actually a much smaller biofiltration capacity, so that is crucial that you carry out not overstock it v too numerous fish. Also, due to the fact that it is such a perceptible environment, an excellent filtration is absolutely crucial for little tanks.


Small AquariumsTank SizeL x W x HEmpty WeightFilled Weight2.5-gallon5-gallon10-gallon (leader)15-gallon15-gallon (high)
12" x 6" x 8"3 lbs.27 lbs.
16" x 8" x 10"7 lbs.62 lbs.
20" x 10" x 12"11 lbs.111 lbs.
24" x 12" x 12"21 lbs.170 lbs.
20" x 10" x 18"22 lbs.170 lbs.
Sizes and weights the aquariums approximately 15 gallons

Mid-Sized Aquariums

These room the aquariums that room most often recommended because that beginners. Noþeles in the 20- to 40- gallon selection has a enough volume that will certainly minimize harmful effects because of chemistry changes in the water and will be huge enough to manage a nice stock of fish.


Also, this tanks room not so large that cleaning will certainly be difficult. This is important due to the fact that many world who are brand-new to aquariums uncover that maintaining up with maintenance quickly becomes overwhelming. Overall, the mid-sized tanks space a nice, manageable size.


Medium AquariumsTank SizeL x W x HEmpty WeightFilled Weight20-gallon (high)20-gallon (long)25-gallon29-gallon30-gallon (breeder)40-gallon (breeder)40-gallon (long)
24" x 12" x 16"25 lbs.225 lbs.
30" x 12" x 12"25 lbs.225 lbs.
24" x 12" x 20"32 lbs.282 lbs.
30" x 12" x 18"40 lbs.330 lbs.
36" x 18" x 12"48 lbs.348 lbs.
36" x 18" x 16"58 lbs.458 lbs.
48" x 12" x 16"55 lbs.455 lbs.
20 come 40 gallon capacity

large Aquariums

The bigger the aquarium, the more fish you deserve to stock. The is a chose advantage, yet it also means that friend will need to work harder to keep these tanks. You also have come be concerned with tanks of this size when it pertains to weight when filled. You should make sure your floor and also cabinet have the right to handle such heavy loads. Owners of very large tanks might even discover that floor combine is essential to assistance a load that is in overabundance of one ton.


Bigger tanks have a good appeal, specifically when you want to create a varied aquarium. However, you likewise need to take into consideration the tank's range in relationship to the room and its surroundings. Is there sufficient room because that hoses and accessories in between the tank and wall? Is that a high-traffic room? are there room constraints that could lead to mishaps and broken glass? do you have shelves overhanging the tank the may loss down and also create an emergency for your fish? these are important questions come ask before making such a far-ranging investment v your time and also money.


Large AquariumsTank SizeL x W x HEmpty WeightFilled Weight50-gallon55-gallon65-gallon75 gallon90-gallon125-gallon150-gallon180-gallon
36" x 18" x 19"100 lbs.600 lbs.
48" x 13" x 21"78 lbs.625 lbs.
36" x 18" x 24"126 lbs.772 lbs.
48" x 18" x 21"140 lbs.850 lbs.
48" x 18" x 24"160 lbs.1050 lbs.
72" x 18" x 21"206 lbs.1400 lbs.
72" x 18" x 28"308 lbs.1800 lbs.
72" x 24" x 25"338 lbs.2100 lbs.
50 gallons and larger sizes

Calculating load of Custom-Shaped Tanks

In enhancement to straightforward rectangles, fish tanks may be in the form of hexagons, pentagons, or also cylinders. If you are buying together a tank, the volume in gallons will currently be specified and you deserve to use the charts above to calculate the empty and also full weight of the tank. A 50-gallon fish tank will have actually the same weight measurements whether it is rectangular, hexagonal, or cylindrical in shape.


But if you room buying or have actually been offered a provided tank and do not recognize the gallon size, calculating the gallon volume and weight of the tank is really simply a issue of first calculating the cubic inch of volume. The crucial measure come know:


If you deserve to determine the volume of any kind of tank in cubic inches, then it is easy enough to interpret that right into a gallon capacity. Once you've established the gallon capacity, use the charts over to calculation the empty and also full weight of the tank.

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To recognize volume calls for a tiny math. The volume the a tank is determined by very first figuring out the area of the base form in square inches, then multiplying this by the height. The easiest means to perform this is to lay out out the shape of the base, then division it into shapes that have areas that can easily be calculated. Because that example, a hexagon deserve to be separated into rectangles and also triangles. Calculate the area that each shape in inches and also then add them with each other to figure the area the the tank's base shape. Main point this number through the elevation of the tank to calculation the total volume in cubic inches. Next, division the complete cubic-inch volume by 231 to discover the gallon capacity of the tank. Finally, discover a corresponding gallon capacity in the charts above to find the approximate load for her tank. 


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